Custom Dog Doors Built to Any Size
Professional Custom Pet Door Installation for Doors and Walls, Made to Your Exact Dimensions
Portal Pros installs custom made Security Boss pet doors fabricated to your exact flap size, rough cut opening, or overall frame dimensions, for doors 1 1/4" to 2" thick and walls 2" to 16" deep. Giant breeds, odd sized openings, and tight spaces are exactly what custom is for.
Do You Need a Custom Dog Door? Text Us a Photo
The fastest way to find out is to show us. Text a photo of your current setup, the old pet door, the existing hole, or the space you are working with, and tell us why you think you need custom: a unique flap size for your pet, a specific hole that has to be filled, or a tight overall frame constraint. A Portal Pros expert will confirm the right custom configuration and get you a same day quote.
Prefer to talk it through face to face? You can also schedule a live video consultation and we will look at your door or wall together in real time.
Request a Free Custom Dog Door Installation Quote
Fill out the form below and a Portal Pros representative will get back to you promptly. When it comes to dog doors only trust the pros, Portal Pros.
Most dog doors come in fixed sizes. A custom dog door is built to whatever dimensions your situation actually requires. If you have a giant breed like a Great Dane or Mastiff that exceeds standard XL sizing, an existing rough cut from a previous pet door that does not match anything on the market, or a space confined opening where only one overall frame dimension will fit, a custom made Security Boss pet door is the right answer. Portal Pros installs custom fabricated pet doors in doors 1 1/4" to 2" thick and walls 2" to 16" deep, built to your exact specifications before the installation visit.
The Three Reasons You Need a Custom Dog Door
1. A Unique Flap Size for Your Pet
Standard sizing charts stop where your dog does not. With a custom pet door, the flap opening is built to your actual animal: roughly 2 inches above shoulder height and at least 2 inches wider than the broadest point of the chest or hips. Giant breeds like Great Danes, Saint Bernards, Newfoundlands, and Irish Wolfhounds get an extra large dog door that truly fits, and unusually small or wide pets get an opening sized for comfort instead of the closest off the shelf approximation.
2. A Specific Hole That Has to Be Filled
If a pet door was previously installed, the rough cut is already in your door or wall, and standard replacement pet doors almost never match an existing hole. A custom unit is fabricated with the outer frame built to your exact rough cut dimensions, so the new dog door fills the opening cleanly with no gaps, no patching, and no visible scars around the perimeter. This is also the fix for old proprietary and off brand pet doors made in sizes nobody sells anymore.
3. A Confined Overall Frame
Some installations have hard limits on total frame size: limited clearance from the door bottom or edge, a wall opening that cannot be enlarged, trim or structural elements in the way, or an HOA or design constraint on how much frame can show. A custom pet door is fabricated to whatever overall frame dimensions your space allows, with the pet opening made as large as possible inside that boundary.
Security Panel Load Direction: The Detail That Makes or Breaks a Custom Order
Every Security Boss custom pet door includes a locking security panel that slides into the frame from a fixed direction, and that load direction is built into the unit at fabrication. It cannot be changed after the door is made. If the panel loads from the top, you need clear space above the opening for the panel to slide in and out. If clearance above is blocked by a door handle, lock hardware, trim, framing, or the top of the door itself, the unit has to be fabricated with a different load direction from the start.
This is one of the most common and most expensive mistakes in DIY custom orders, because custom fabricated units are nonreturnable. Portal Pros confirms your security panel load direction during on site measurement verification, checking the clearance around your opening in every direction before the order is placed, so your locking panel operates smoothly for the life of the door.
What Is a Custom Pet Door?
A custom pet door is a Security Boss unit fabricated to your exact specified dimensions rather than a fixed standard size. The outer frame, the tunnel on wall installations, the pet opening, and the security panel load direction are all built to your measurements. Security Boss handcrafts every custom pet door to order in the USA, so each unit is made specifically for your installation before it ships.
Custom pet doors are available in door mount configurations for doors 1 1/4" to 2" thick and wall mount configurations for walls 2" to 16" deep. Both the MaxSeal and the top tier MaxSeal PRO come in custom sizes, so you get the best insulation, seal, and security no matter how nonstandard your dimensions are.
When Do You Need a Custom Dog Door?
Portal Pros recommends a custom pet door for these situations:
- Giant breeds — Great Danes, Mastiffs, Saint Bernards, Newfoundlands, Irish Wolfhounds, and other dogs whose shoulder height or body width exceeds standard XL sizing
- Existing rough cuts from prior pet doors — the hole is already there; a custom unit fills it precisely with no gaps or patchwork
- Space confined openings — limited clearance from the door bottom, edge, or adjacent structure that constrains the overall frame
- Security panel clearance limits — obstructions above or beside the opening that require a specific panel load direction fabricated into the unit
- Replacing an old nonstandard pet door — older and off brand pet doors were often made in proprietary sizes; a custom unit replaces them cleanly
- Odd sized doors or walls — thicknesses or depths outside the range of standard tunnel extensions
- HOA or aesthetic requirements — the overall frame must fit within a specific visual or structural boundary
Not sure whether you need standard or custom? Text a photo of your setup to 719-301-7678 and we will tell you directly.
Why Choose Professional Custom Pet Door Installation?
Measurement verification before fabrication. Custom pet doors are nonreturnable once built, the dimensions and panel load direction are fabricated in at the factory. Portal Pros verifies your measurements before the order is placed. For wall installations, your installer measures on site to confirm the exact rough cut dimensions, wall depth, and security panel clearance before the custom unit is ordered.
Correct sizing for your specific pet. Sizing a custom pet door requires your pet's actual shoulder height and body width at the broadest point, not an estimate. Portal Pros walks you through the measurement process and confirms the correct pet opening dimensions for your breed before your custom unit is ordered.
Clean installation into existing rough cuts. Installing into an existing rough cut requires assessing the opening's condition, squareness, and any framing damage around the perimeter. Portal Pros installers address any issues before setting the new frame so the custom unit seats cleanly and seals correctly.
Full sealing on both sides. Whether going through a door or a wall, every Portal Pros installation is fully sealed against air and moisture on both the interior and exterior faces. On wall installations, the tunnel is tipped so moisture drains outward instead of pooling inside the wall.
Craftsmanship guarantee. Every Portal Pros custom pet door installation is backed by our craftsmanship guarantee. If there is ever an issue with our installation work, we make it right.
How the Custom Pet Door Installation Process Works
Step 1 — Text, Measure, and Quote. Text photos of your door or wall to 719-301-7678 or fill out the form above with your pet's shoulder height and width and your existing rough cut dimensions if you have them. We confirm whether custom is the right route, recommend the product and configuration, and provide a same day quote.
Step 2 — On Site Measurement Verification. A Portal Pros installer contacts you within 24 to 48 hours to schedule a verification visit. Because custom units are fabricated to your exact specifications and cannot be returned once built, we verify all critical dimensions and the security panel load direction on site before the order goes in.
Step 3 — Fabrication. Your custom pet door is handcrafted to order by Security Boss, typically in two to three weeks. Your installer schedules the installation visit as soon as the unit is delivered.
Step 4 — Professional Installation. For door mounts, your installer cuts or cleans the opening and sets the custom frame with clean faces on both sides, fully sealed. For wall mounts, the tunnel is set at the correct angle for outward drainage, framed on both faces, and fully sealed around the perimeter. The flap and locking security panel are tested before the installer leaves.
Step 5 — Final Test and Walkthrough. Your installer tests full operation of the flap and security panel, confirms the panel loads and removes smoothly in its fabricated direction, checks the seal around the frame, and walks you through care and use. Most custom installations take two to four hours depending on the substrate.
Custom Pet Door Products Portal Pros Installs
All custom pet doors are Security Boss products, handcrafted to order, American made, and available in the following configurations:
Custom MaxSeal PRO Wall Mount Pet Door — from $372.89. The top of the line custom wall mount dog door. Composite aluminum and HDPE locking security panel, dual vinyl flap insulation, precision weather seal. Built to your exact rough cut dimensions for walls 2" to 16" deep with indoor and outdoor carpet tunnel lining included. Available in White, Beige, Brown, Silver, and Dark Bronze. For homeowners who want maximum performance regardless of nonstandard dimensions.
Custom MaxSeal Wall Mount Pet Door — from $299.19. Excellent custom wall mount performance at a mid range price. Dual vinyl flap insulation, magnetic seal, locking security panel. Built to your exact rough cut dimensions for walls 2" to 16" deep with carpet tunnel lining included. Available in White, Beige, Brown, Silver, and Dark Bronze.
Custom MaxSeal PRO Door Mount Pet Door — from $310.19. Custom premium door mount built to your exact rough cut or overall frame dimensions for doors 1 1/4" to 2" thick. Dual vinyl flap insulation with piano hinge flap attachment, magnetic seal, and a locking security panel built from aluminum and insulating materials. Available in White, Beige, Brown, Silver, and Dark Bronze.
Custom MaxSeal Door Mount Pet Door — from $274.99. Custom door mount built to your exact rough cut or overall frame dimensions for doors 1 1/4" to 2" thick. Dual vinyl flap insulation, magnetic seal, locking security panel. Available in White, Beige, Brown, Silver, and Dark Bronze.
Custom MaxSeal French Door Dog Door — from $223.15. Custom fabricated for French door pane replacement, built to your exact pane dimensions by square inch range. Single or dual flap, UV treated and weatherized. Available in White, Beige, Brown, Silver, and Dark Bronze. For true French doors where the pane dimensions do not match any standard product.
Contact Portal Pros at 855-DOG-DOOR for current pricing and to discuss which custom product fits your installation.
Why Portal Pros for Custom Dog Door Installation?
Portal Pros is the nation's leading professional pet door installation company with over 20 years of industry experience.
- Three custom use cases covered — a unique flap size for your pet, an existing rough cut to fill, or a confined overall frame
- Security panel load direction verified — confirmed on site before fabrication, because it is built into the unit and cannot be changed after
- On site measurement verification before fabrication — every dimension confirmed in person before your nonreturnable custom unit is ordered
- Door mount and wall mount custom options — doors 1 1/4" to 2" thick, walls 2" to 16" deep
- Two performance tiers — Custom MaxSeal and Custom MaxSeal PRO for every budget
- Giant breed capable — custom sizing for Great Danes, Mastiffs, and every oversized breed
- Licensed, bonded and insured installers nationwide
- Craftsmanship guarantee — if there is ever an issue with our installation, we make it right
- 1,100+ five star reviews from homeowners across the country
- Free shipping on all pet door products, always
- Giving back — a portion of every sale is donated to no kill animal shelters across the United States
Ready to Get Your Custom Dog Door Installed?
Text photos of your current setup to 719-301-7678, call 855-DOG-DOOR, or fill out the quote form above. Send your pet's shoulder height and width and your existing rough cut dimensions if you have them, and we will come back with the right product, the right dimensions, the right security panel load direction, and a same day quote.
Custom Dog Door Installation — Frequently Asked Questions
What is the difference between a standard and a custom pet door?
Standard pet doors are made in fixed sizes. Custom pet doors are fabricated to your exact specified dimensions, whether that is your pet's actual shoulder height and body width, the dimensions of an existing rough cut opening, or a specific overall frame size required by your space. Every custom Security Boss pet door is handcrafted to order.
What is a security panel load direction and why does it matter?
The locking security panel slides into the pet door frame from a fixed direction that is built into the unit at fabrication. If clearance in that direction is blocked by a door handle, lock hardware, trim, or framing, the panel cannot be loaded or removed, and custom units cannot be returned once built. Portal Pros verifies the correct load direction on site before your custom order is placed.
What is a rough cut?
A rough cut is the existing hole in your door or wall where a pet door was previously installed or where a new opening has been cut. When ordering a custom pet door to fill a rough cut, the outer frame of the custom unit is built to match your exact rough cut dimensions so it seats cleanly without gaps around the perimeter.
How do I measure for a custom pet door?
For sizing to your pet: measure shoulder height from the floor to the top of the shoulders; the pet opening should be about 2 inches taller. Measure the widest point of the body and add at least 2 inches for opening width. For filling an existing rough cut: measure the width and height of the opening precisely. Text your measurements and photos to 719-301-7678 and we will confirm the right dimensions before anything is ordered.
Can a custom pet door be returned if the dimensions are wrong?
Custom fabricated pet doors cannot be returned once built, which is why Portal Pros verifies all critical dimensions and the security panel load direction on site before the order is placed. Your installer confirms every measurement in person so the fabricated unit is correct before it ships.
What wall depths are compatible with custom wall mount pet doors?
Custom Security Boss wall mount pet doors accommodate walls from 2" to 16" deep. This covers standard 2x4 and 2x6 framed walls, stucco over foam, double wythe brick, and most residential wall constructions. Contact Portal Pros if your wall exceeds 16" and we will assess your options.
What door thicknesses are compatible with custom door mount pet doors?
Custom door mount pet doors fit doors from 1 1/4" to 2" thick, covering the full range of standard residential exterior doors including wood, fiberglass, steel, and solid core. If your door falls outside this range, contact Portal Pros and we will advise on the right approach.
What is the difference between the Custom MaxSeal and Custom MaxSeal PRO?
The Custom MaxSeal features dual vinyl flap insulation, a magnetic seal, and a standard locking security panel. The Custom MaxSeal PRO adds a composite aluminum and HDPE locking security panel for greater strength and impact resistance, along with enhanced weatherproofing throughout. Both are available in all custom dimensions. The PRO is recommended for harsh climates, high traffic pets, and homeowners who want maximum security and insulation.
How long does custom pet door installation take from start to finish?
The total timeline from first contact to finished installation is typically three to four weeks. This includes a first visit for on site measurement verification, a fabrication lead time of two to three weeks, and a second visit for installation. The installation itself takes two to four hours depending on the substrate.
Can custom pet doors be installed in any wall material?
Portal Pros installs through wood framed walls, stucco, brick, block, and other masonry substrates. Wall material affects the tools and techniques required but does not disqualify a wall from a custom installation. Text photos of your wall to 719-301-7678 and we will confirm the approach and any material specific considerations.
What colors are available for custom pet doors?
All custom Security Boss pet doors are available in White, Beige, Brown, Silver, and Dark Bronze to match most standard exterior door and trim finishes.
Does Portal Pros install custom pet doors nationwide?
Yes. Portal Pros operates a nationwide network of licensed, bonded, and/or insured installers. A professional in your area will contact you within 24 to 48 hours of placing an order.
Does Portal Pros offer free shipping on custom pet doors?
Yes. Portal Pros offers free shipping to the contiguous 48 states on every order, always, no minimums, no exceptions.
Does Portal Pros donate to animal shelters?
Yes. A portion of every Portal Pros sale is donated to no kill animal shelters across the United States. Our mission goes beyond installing pet doors. It is about opening doors to a better life for animals in need.
Let customers speak for us
Loved the door and the installation was great!
We have just moved to OKC area from Las Vegas, NV and knew we needed a strong dog door to hold up to the weather here, and although my husband can do most anything, cutting a significant hole through brick, next to an electrical outlet, was NOT something I wanted him to do. When I found the Portal Pros website and sent a request for a quote.
Jason called a few days later and although the installation and door we chose was pricey, IT WAS WORTH EVERY PENNY. (Jason gave us a little bit of a discount.) The dog door was shipped to my house and holy cow, this dog door was the strongest, heaviest door I have EVER seen! (Security Boss - MaxSeal™ PRO Pet Door for Walls). So impressed.
The installer, David from Mr. Handyman in North OKC, was on-time, professional, and executed a PERFECT installation through the brick wall of my home. The dog door is perfectly aligned, centered, and I don't have a single negative thing to say. Look how perfectly centered the interior frame is! Baseboard -> door frame -> outlet! WOW! (See photos) He even cleaned up every scrap and dust particle, inside and out. Although David said he has installed MANY dog doors, he had never installed one of these. Even he was impressed with the weight and quality of this door. Out of 5 stars, David gets 10!
All-in-all, Jason's communication before, during, and after the install was appreciated and noted. I am grateful for his updates and check-ins.
Thank you, Jason and David for a seamless and perfect experience.
I couldn’t be happier with the experience. Installing a dog door was much more affordable than replacing the entire door, and the finished result looks great. The whole process was seamless from start to finish—the installer was professional, worked quickly, and the installation was completed without any issues.
It was easy to order and schedule, once you understand how it works. First, you order the doggie door, based on the size of your dog and what type of door it is being installed in. Then the new doggie door is delivered by UPS. Once it arrives safely, installation can be scheduled. This is a quality door and reliable vendor. The end result was very professional and it works like a charm!
The door quality was excellent. Our dog is happy and making us nuts going in, and out, in and out! 🐾
I highly recommend BHC contracting. They were very professional and installation of our first doggie door went smoothly.
The process was seamless, from the initial consultation through the installation of the door. Now if I can just train both dogs to use it.
Portal Pros did a great job installing our dog door through a stone wall!
easy to install and cats started using it immediately, would use them again
Sturdy door with strong and easy to use security panel. A large, freewheeling outdoor cat adopted me a few months ago and he wasn't adjusting to life as an indoor cat. I got him this door and after showing him how it worked, he came in from outside through it the 1st day and was able to go in and out by the second. Happy cat.
I was beyond impressed with the level of customer service from Bryan. I had attempted contact with another company seeking assistance on where to place a dog door that made the most sense- but I was matched with a bot thatwas clearly giving me template answers. That was not so with Portal Pros. Bryan was incredibly helpful and attentive with a customized solution. Installation was excellent, and the install team was professional and great with our dogs.
I had a glass dog door installed in my backyard entrance cant be happier with there work really professional!
I love my door! They were most affordable out of everyone I quoted and the door is high quality. Would recommend.