Dogwalk® Glass Fitting
Dog Doors for Glass Doors — Dogwalk® Glass Fitting Range
Looking for a dog door for a glass door, ranch slider, or double-glazed panel? Dogwalk® glass fitting dog doors install directly into the glass itself — no frame cutting, no wall modification. Designed in New Zealand since 1999, the unique round cut-out makes installation faster and cleaner for glaziers compared to rectangular alternatives. The high-swing flap reduces hinge stress for longer-lasting performance, and models are available in clear, white and black to suit your joinery. Whether you need a dog flap for a glass sliding door, a double-glazed window, or a single glass panel, there’s a Dogwalk® model to suit. Trusted by glaziers and dog owners across 20+ countries worldwide.
Glass 3mm–32mm
Cut-out 267–385mm dia
15 models
Clear, White & Black
⚠️ Important: Dog doors for glass doors cannot be installed into existing toughened or double-glazed glass. The glass panel must be replaced with the hole pre-cut at the time of manufacture. Your glazier can arrange this — contact us if you need guidance on the correct cut-out size.
Quick answer
Can you put a dog door in a glass door? Yes — a glazier replaces the glass panel with a new one that has a round hole (320mm intermediate or 385mm standard) pre-cut at manufacture, then fits the Dogwalk® dog door into the hole. Existing toughened or double-glazed glass cannot be cut on-site. Most installations are complete in under an hour once the panel arrives.
All Glass Fitting Dog Door Models
Standard dog door — medium to semi-large dogs
G-DDSLCGlass Fitting Dog Door Slim Line — Clear
View →Glass: 4–20mmOverall: 415×430mm
Cut-out: 385mm diaFlap: 270×313mm
G-DDSLWGlass Fitting Dog Door Slim Line — White
View →Glass: 4–20mmOverall: 415×430mm
Cut-out: 385mm diaFlap: 270×313mm
G-DDCGlass Fitting Dog Door Dual Glaze — Clear
View →Glass: 3–32mmOverall: 415×430mm
Cut-out: 385mm diaFlap: 270×313mm
G-DDWGlass Fitting Dog Door Dual Glaze — White
View →Glass: 3–32mmOverall: 415×430mm
Cut-out: 385mm diaFlap: 270×313mm
G-DDBGlass Fitting Dog Door Dual Glaze — Black
View →Glass: 3–32mmOverall: 415×430mm
Cut-out: 385mm diaFlap: 270×313mm
Intermediate dog door — small to medium dogs
G-IDDSLCIntermediate Dog Door Slim Line — Clear
View →Glass: 4–13mmOverall: 340×340mm
Cut-out: 320mm diaFlap: 216×250mm
G-IDDSLWIntermediate Dog Door Slim Line — White
View →Glass: 4–13mmOverall: 340×340mm
Cut-out: 320mm diaFlap: 216×250mm
G-IDDCIntermediate Dog Door Dual Glaze — Clear
View →Glass: 4–32mmOverall: 370×370mm
Cut-out: 320mm diaFlap: 216×250mm
G-IDDWIntermediate Dog Door Dual Glaze — White
View →Glass: 4–32mmOverall: 370×370mm
Cut-out: 320mm diaFlap: 216×250mm
G-IDDBIntermediate Dog Door Dual Glaze — Black
View →Glass: 4–32mmOverall: 370×370mm
Cut-out: 320mm diaFlap: 216×250mm
Maxi pet door — large cats & small dogs
G-SDDSLCGlass Fitting Maxi Slim Line — Clear
View →Glass: 3–21mmOverall: 306mm
Cut-out: 267mm diaFlap: 203×187mm
G-SDDSLWGlass Fitting Maxi Slim Line — White
View →Glass: 3–21mmOverall: 306mm
Cut-out: 267mm diaFlap: 203×187mm
G-SDDCGlass Fitting Maxi Dual Glaze — Clear
View →Glass: 3–28mmOverall: 306mm
Cut-out: 267mm diaFlap: 203×187mm
G-SDDWGlass Fitting Maxi Dual Glaze — White
View →Glass: 3–28mmOverall: 306mm
Cut-out: 267mm diaFlap: 203×187mm
G-SDDBGlass Fitting Maxi Dual Glaze — Black
View →Glass: 3–28mmOverall: 306mm
Cut-out: 267mm diaFlap: 203×187mm
Not sure which model suits your dog and glass?
Answer a few quick questions and get an instant recommendation.
Watch: How a Glass Fitting Dog Door Is Installed
Watch the install — then give your glazier this
- Round cut-out size: 267mm (maxi), 320mm (intermediate) or 385mm (standard)
- Your glass type & thickness: single or double glazing, 3–32mm
- The fitting instructions from the box — glass range and clamping detail
Any qualified glazier can do this — most complete it in under an hour. Toughened or sealed units need a new panel with the hole pre-cut.
Helpful Guides
Dog Doors for Sliding Glass DoorsInstall Guide
Best Glass Fitting Cat & Dog DoorsBuyer's Guide
What Size Dog Door Do I Need?Sizing Guide
How to Measure Your DogSizing Guide
Frequently Asked Questions — Dog Doors for Glass
Yes — but not into existing toughened or double-glazed glass. Glass cannot be cut after it has been toughened. Instead, the glass panel is replaced with a new one that has the round cut-out hole pre-cut at the time of manufacture. Your glazier orders the replacement panel to spec, fits it into your door or window frame, and then installs the Dogwalk® dog door into the hole. It’s a common job for glaziers and takes just a few hours from start to finish. Contact us for the correct cut-out diameter for your chosen model.
For a glass sliding door (ranch slider), the slim line models are the best choice — the G-DDSLC (clear) or G-DDSLW (white) for medium to larger dogs, or the G-IDDSLC / G-IDDSLW for smaller breeds. The slim line frame is specifically designed to sit flush within the track depth of a sliding door panel without interfering with the door’s operation. Dual glaze models can also be used in ranch sliders if the glass thickness requires it. See the full Dogwalk® range or use the Pet Door Selector for a personalised recommendation.
Yes. Because the glass panel must be replaced rather than cut on-site, a glazier is required. The glazier measures the opening, orders a replacement glass panel with the round cut-out pre-cut to the correct diameter, removes the existing panel, fits the new one, and installs the dog door. The Dogwalk® round cut-out design is preferred by glaziers over rectangular alternatives because it is faster to specify, temper, and fit. If you need a glazier referral in New Zealand, contact us and we can help point you in the right direction.
Yes — the dual glaze Dogwalk® models are specifically designed for double-glazed glass units. The G-DDC, G-DDW, G-DDB (standard) and G-IDDC, G-IDDW, G-IDDB (intermediate) models accommodate glass from 3mm up to 32mm, covering most modern double-glazed panels. The deeper frame bridges both panes of the double-glazed unit and maintains the thermal performance of the door. The existing double-glazed panel must be replaced with a new unit that has the cut-out pre-cut — your glazier can arrange this.
Both have the same flap opening and cut-out diameter within the same size range — the difference is the frame depth. Slim line models (G-DDSLC, G-DDSLW, G-IDDSLC, G-IDDSLW) have a lower-profile frame designed to clear the track of a sliding door and suit thinner single-pane glass (4–20mm). Dual glaze models (G-DDC, G-DDW, G-DDB, G-IDDC, G-IDDW, G-IDDB) have a deeper frame accommodating glass up to 32mm, making them the right choice for double-glazed units and thicker glass panels.
Measure your dog at the shoulder — the flap opening height should be at least equal to this measurement. The intermediate dog door (216×250mm flap, 320mm cut-out) suits small to medium breeds. The standard dog door (270×313mm flap, 385mm cut-out) suits medium to semi-large breeds. For very small dogs or large cats, the maxi pet door (203×187mm flap, 267mm cut-out) may also be suitable. Use the Pet Door Selector if you’re unsure, or contact us with your dog’s breed and weight.
Coverage varies by model. Slim line models suit glass from 4mm to 20mm. Dual glaze standard and intermediate models cover the widest range — 3mm to 32mm — making them compatible with most modern double-glazed units. The maxi slim line suits 3mm to 21mm, and the maxi dual glaze suits 3mm to 28mm. Always confirm your glass thickness with your glazier before ordering to ensure you select the correct model.
Dogwalk® glass fitting dog doors are available in clear, white and black across most size ranges. Clear suits aluminium joinery and modern glass doors. White suits white-frame joinery. Black suits dark-frame ranch sliders and contemporary homes. Colour availability varies by model — check individual product pages for exact options, or contact us to confirm availability for your preferred model.
Yes. Replacement flaps are available for the Dogwalk® glass fitting dog door range. Visit the Spares & Accessories page or contact us with your model number to order the correct replacement flap. Pet-Tek has been supplying spare parts for its range since 1999, so parts remain available for older models.
Yes. Pet-Tek International ships Dogwalk® dog doors worldwide from Auckland, New Zealand. We supply glaziers, pet retailers, and dog owners across New Zealand, Australia, the UK, Europe, the United States, South Africa, the Gulf region, and more than 20 countries in total. Contact us for a shipping quote to your location.
Glaziers, Retailers & Distributors
Stock the Dogwalk® glass fitting range. Pet-Tek International is a New Zealand pet door company and wholesale supplier since 1999 — trade pricing, export support to 20+ countries, and local stock in Melbourne & Sydney for Australian trade buyers. The round cut-out design means faster, lower-risk jobs for glazing partners.
