Dog Door for Sliding Glass Door
Dog Door for Sliding Glass Door: Every Option Compared
Permanent in glass dog doors, removable patio panel inserts, electronic pet doors, and giant breed options for sliding glass doors, all in one place, with free shipping on every order and professional installation available nationwide.
Adding a dog door to a sliding glass door is the most popular pet door project in America, and it is exactly what Portal Pros specializes in. The problem with most of what you will find online is that it is all the same thing: a tall aluminum panel insert that sits in your track, shrinks your walkway, and leaves you fighting a clamp lock every time you open the door. That is one option. It is not the only one, and for most homeowners it is not the best one.
There are really two ways to put a doggy door in a sliding glass door. You can install it into the glass itself with a custom fabricated replacement panel, which is permanent, seamless, and keeps your door working exactly like it always has. Or you can use a patio panel insert that sits in the track, which is removable, renter friendly, and installs in minutes with no tools. Portal Pros carries the best of both, so you get the right answer for your home instead of the only thing a company happens to sell.
In Glass Dog Door vs Patio Panel Insert: Which Is Right for You?
| In Glass Dog Door | Patio Panel Insert | |
|---|---|---|
| How it works | Your existing glass is replaced with a custom tempered panel that has the pet door built in | An adjustable panel with a built in pet door sits in your sliding door track |
| Best for | Homeowners who want a permanent, factory built look | Renters and anyone who wants a removable, no tools solution |
| Door function | Door slides, locks, and seals exactly as before | Door opening narrows by the panel width; lock engages against the panel |
| Insulation | Single or dual pane, Low E compatible, matches your original glass | Varies by model; dual pane insulated options available |
| Installation | Professional, single visit of 2 to 8 hours | DIY in minutes, no tools required |
| Starting price | From $228.71 plus installation | From $472.33, no installation needed |
Not sure which way to go? Show us your door.
Text a photo of your sliding glass door, inside and outside, and a real Portal Pros expert will tell you exactly which dog door fits your track, your glass, and your dog.
Text Photos of Your Door to 719-301-7678Prefer to talk it through face to face? You can also schedule a live video consultation and we will look at your door together in real time.
Permanent In Glass Dog Doors for Sliding Glass Doors
These are installed into a custom fabricated tempered glass panel that replaces your existing glass. Your frame, rollers, locks, and alarm sensors stay exactly as they are, your full door opening stays usable, and the finished result looks like the door came from the factory with a pet door in it. Available for single pane, dual pane, and Low E glass, with professional installation nationwide. Read more on our glass dog door installation page or the complete in glass installation guide.
MaxSeal PRO In Glass Dog Door
From $273.45
For homeowners who want the best sealing, security, and durability money can buy
The MaxSeal PRO is the top glass dog door on the market. It pairs a reinforced aluminum clad locking security panel with a dual vinyl flap on a piano hinge, so it seals tight against heat, cold, wind, and moisture year after year of heavy use. Available in five finishes and sized from XS through XXL, it is the door our customers with harsh climates and high traffic dogs choose again and again.
MaxSeal In Glass Dog Door
From $272.21
For homeowners who want premium in glass performance with flexible finish options
The MaxSeal delivers the same clean, professionally integrated in glass installation with dual flap insulation and a magnetic seal, in multiple finishes to match your door. It is the proven middle of the lineup, permanent glass mounted performance without stepping all the way up to the PRO.
SB Standard In Glass Pet Door
From $228.71
For homeowners who want a permanent glass dog door at the lowest starting price
The SB Standard is the entry point to a true in glass installation. Same custom fabricated tempered glass process, same built in look, at a price that beats most premium track inserts. If you want permanent and clean without the premium price tag, start here.
Removable Patio Panel Inserts for Sliding Glass Doors
A patio panel insert sits in your sliding door track with a spring loaded adjustable top, no screws and no tools, and comes back out just as easily. It is the right answer for renters, temporary situations, and anyone who does not want to modify the door. Every Security Boss insert we carry is hand built to order with an aluminum frame, tempered glass, and an extendable brace bar for security. See the full patio pet door collection and our patio pet door installation guide.
Standard Lockable Patio Pet Door Insert
From $472.33
For renters and DIYers who want a quality insert without the premium price
The flagship Security Boss insert: aluminum frame, shatterproof tempered glass, magnetic flap closure, weather stripping, and a locking security panel. Four pet opening sizes with multiple rise options mean it fits everything from cats to big dogs, and it installs in minutes.
MaxSeal Insulated Locking Patio Pet Door Insert
From $926.02
For hot and cold climates where a single pane insert would bleed energy
The number one insert for weather. Dual pane insulated glass plus dual vinyl flaps make this the most energy efficient patio panel available, the direct answer to the cheap single pane aluminum inserts that quietly run up your utility bill. Spring loaded fit, included brace bar, and a locking security panel round it out.
Giant Breed Lockable Patio Pet Door
From $922.07
For Great Danes, Mastiffs, Saint Bernards, and every dog that laughs at XL
Most sliding glass dog doors stop where giant breeds start. This one does not. Oversized openings in a reinforced hand built panel give the biggest dogs a comfortable walk through with the same lockable security and tool free installation as the rest of the lineup.
Electronic Dog Doors for Sliding Glass Doors
Want the door to open only for your pet? These inserts pair a Security Boss panel with a PetSafe electronic flap that unlocks from your pet's SmartKey collar sensor, keeping strays, raccoons, and neighborhood cats out while your pet comes and goes freely. Browse all electronic dog doors.
PetSafe Electronic Single Pane Lockable Patio Pet Door
From $704.54
For selective entry in mild climates at the lower electronic price point
Collar activated selective entry built into a lockable Security Boss track insert with single pane tempered glass. Only your pet gets in, and the whole panel still lifts out whenever you want your full door back.
PetSafe Electronic Dual Pane Lockable Patio Pet Door
From $727.14
For selective entry plus real insulation in hot or cold climates
The same collar activated selective entry upgraded with dual pane insulated glass, so you get security, energy efficiency, and a removable install in one panel.
Cat Doors for Sliding Glass Doors
Elite Super Selective Sliding Glass Patio Pet Door Insert
From $621.49
For cat households that need programmable, raccoon proof access control
A programmable RFID cat door built into a sliding glass track insert. Program up to 8 cats, set timers for outdoor access, and track who is in or out. The magnet centered locking flap cannot be lifted by raccoons the way ordinary locking cat doors can, which is why this is the go to insert for outdoor cat setups.
Bonus: Do Not Forget the Screen Door
If your slider has a screen door behind it, a pet door in the glass only solves half the problem. The Aluminum Sliding Screen Door Dog Door blends into your screen frame in bronze or white, so your pet has a clear path in screen season too. See the full screen door pet door collection.
What Size Dog Door Does Your Sliding Glass Door Need?
Measure your dog's shoulder height from the floor to the top of the shoulders and add 1 to 2 inches for the opening height. Measure the widest point of the body, chest or hips, and add at least 2 inches for width. If your dog is between sizes, always size up. For track inserts, also measure your slider opening height from the track floor to the top channel so the panel's adjustment range matches your door. Sizes run XS through XXL across the lineup, with the Giant Breed panel and custom fabrication covering everything beyond that. Not sure? That is exactly what the photo text line is for.
Renting vs Owning: The 10 Second Answer
Own your home? Go in glass. It is permanent, it seals better, it keeps your full door opening, and it adds a finished, factory built feature to the house. Renting, or want it reversible? Go with a patio panel insert. It installs in minutes, comes out just as fast, and moves with you to the next place. Either way, every option on this page ships free, and a portion of every sale is donated to no kill animal shelters across the United States.
Professional Installation, Nationwide
Patio inserts are a true DIY job. In glass installation is not: it involves custom tempered glass fabrication, proper glazing, and precise sealing, which is why Portal Pros runs a nationwide network of licensed, bonded, and insured installers with over 20 years of industry experience and more than 1,200 five star reviews. Hire an installer and we handle the whole project, from measurement verification to the final seal and test, usually in a single visit.
Ready to give your dog the backyard?
Text a photo of your sliding glass door and we will recommend the exact door, size, and installation path, usually the same day.
Text Photos of Your Door to 719-301-7678 Shop All Glass Dog DoorsOr call 855-DOG-DOOR, or schedule a live video consultation and we will look at your door together in real time.
Dog Doors for Sliding Glass Doors — Frequently Asked Questions
Can you put a dog door in a sliding glass door?
Yes, two ways. A permanent in glass dog door replaces your existing glass with a custom tempered panel that has the pet door built in, keeping your door's full function. A patio panel insert sits in the track with no tools and comes out any time. Portal Pros carries both, starting at $228.71 for in glass and $472.33 for inserts.
What is the best dog door for a sliding glass door?
For homeowners, the MaxSeal PRO In Glass Dog Door is the best overall: strongest security panel, best insulation, and a permanent factory built look. For renters, the Standard Lockable Patio Pet Door Insert is the best removable option, and the MaxSeal Insulated Insert is the best choice for extreme climates.
Do sliding glass dog doors work for renters?
Yes. Patio panel inserts install into the track with a spring loaded adjustable top, no screws, no cutting, and no modification to the door. When you move out, the panel lifts out and the door is exactly as it was.
Will a dog door make my sliding glass door less energy efficient?
Not if you choose the right one. In glass installations are fabricated in single or dual pane with Low E compatibility, so your door's insulation is fully maintained. For inserts, the MaxSeal Insulated model uses dual pane glass and dual flaps specifically to avoid the energy loss cheap single pane inserts cause.
Can I still lock my sliding glass door with a pet door insert?
Yes. Every Security Boss insert includes an extendable brace bar to lock the slider against the panel, and every model has a locking security panel that closes the pet opening completely. In glass installations do not affect your existing lock at all.
Do you have a sliding glass dog door for extra large dogs?
Yes. The Giant Breed Lockable Patio Pet Door is built for Great Danes, Mastiffs, Saint Bernards, and similar dogs, and our in glass doors run through XXL with custom fabrication available beyond that.
What size dog door do I need for my sliding glass door?
Measure your dog's shoulder height and add 1 to 2 inches for opening height, then measure the widest point of the body and add at least 2 inches for width. If you are between sizes, size up. Text a photo of your dog and door to 719-301-7678 and we will size it for you.
How do I know which dog door fits my sliding glass door?
Text photos of your door, inside and outside, to 719-301-7678 and a Portal Pros expert will identify your door type and recommend the right product and size. You can also schedule a live video consultation and we will look at your door together in real time.
Does Portal Pros install dog doors in sliding glass doors near me?
Yes. Portal Pros operates a nationwide network of licensed, bonded, and insured installers. A professional in your area will contact you within 24 to 48 hours of placing an order.
Is shipping really free?
Yes. Free shipping on every order, always, no minimums, no exceptions. And a portion of every sale is donated to no kill animal shelters across the United States.
Want to Keep Your Glass Door the Same? Replace the Slab
There is one more path most people never hear about. If you do not want to touch your sliding glass door at all, we can replace a nearby hinged door with a brand new slab that arrives with the pet door already professionally installed. The old door comes off the hinges, the new preinstalled door goes on, and your glass stays exactly as it is. Full door slab replacements are available with clear glass, partitioned glass, or built in mini blinds inside the glass, and it is also the smart route when the existing door is worn out and due for replacement anyway. One visit, one swap, done.
Skip the glass work entirely.
Get a new door with the pet door built in at the factory, ready to hang, with your sliding glass door untouched.
Explore Pre Installed Pet Doors Text a Photo of Your Door