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Melbourne throws up a problem that warmer cities mostly do not: a great many back doors here are double glazed, and a sealed glazing unit cannot simply have a hole drilled through it. That single fact decides how most pet door jobs in this city are done, so it is worth understanding before you buy anything.

The good news is that it is routine work for a glazier, and several models in the range are built for exactly this thickness. Here is what applies where.

Double glazing, and why it changes the job

A double glazed unit is two panes with a sealed cavity between them. Cut into it and the seal is gone, so the unit is not drilled in place. Instead the glazier orders a replacement unit that is manufactured with the opening already in it, and the pet door is fitted into that. The old unit comes out, the new one goes in.

That means two things for you. The lead time is longer than a single-glazed job, because the unit has to be made. And the door you choose has to suit the total thickness of the unit, not the thickness of one pane.

Glazing you are likely to have	Typical total thickness	What fits
Single pane, older home	4–6 mm	Any glass fitting model
Toughened slider	6–10 mm	Any glass fitting model
Double glazed unit	Commonly 20–28 mm	Models rated to 28 mm or 32 mm

Check the rating on the product page before ordering. If you are not sure what you have, measure the depth of the glass in the frame edge, or ask the glazier to check when they quote.

The bit that matters in a Melbourne winter

A pet door is a hole in the wall of a heated house, and in this city that is not a trivial detail. Every Catwalk and Dogwalk flap closes onto a full perimeter seal and hangs under its own weight, so it sits shut rather than resting ajar the way a loose flap does.

The four-way lock earns its keep here too. Set it to closed on a cold night and the opening is sealed rather than merely covered.

Choosing the right size

Sizing is done by the flap opening, never by the breed name. Measure your pet across the widest point of the shoulders and pick a flap comfortably wider. If you land between two sizes, take the larger — an animal that has to squeeze will simply stop using the door.

Cat doors

Model	Suits glass	Cut-out	Flap opening (W × H)
Original Cat Door — clear or white	3–10 mm	245 mm	165 × 193 mm
Slimline Pet Door — clear or white	3–21 mm	267 mm	187 × 203 mm

Dog doors

Model	Suits glass	Cut-out	Flap opening (W × H)
Small Dog Door	3–28 mm	267 mm	187 × 203 mm
Intermediate Dog Door	4–32 mm	320 mm	216 × 250 mm
Dog Door — medium to semi-large dogs	3–32 mm	385 mm	270 × 313 mm

The 28 mm and 32 mm ratings are the ones to note if you have double glazing — those are the models that will take a sealed unit.

Not sure? Answer a few questions and we will name one model →

If your back door is timber

Plenty of Melbourne homes — particularly the older weatherboards and terraces in the inner suburbs — still have a solid timber back door. That is the easiest job of all, because you do not need a tradesperson at all.

Every wood fitting door ships with a cutting template and instructions. You mark the opening, cut it with a jigsaw, and screw the two halves together through the panel. The range covers panels from 5 mm to 52 mm depending on model, which takes in everything from a hollow-core door to a heavy solid one.

Model	Suits panel	Flap opening (W × H)
Slimline Cat Door	11–30 mm	155 × 170 mm
Cat Door Tunnel	11–52 mm	155 × 170 mm
Small Dog Door	11–30 mm	180 × 240 mm
Dog Door	5–36 mm	270 × 320 mm

Wood fitting cat doors →  ·  Wood fitting dog doors →

A Melbourne installer who knows the range

Any qualified glazier in Melbourne can fit a glass fitting pet door. One Victorian business is listed in our national network and already works with Pet-Tek doors:

See the full installer network →
How pet door installation works, step by step →

Delivery in Melbourne

Every order leaves our Melbourne warehouse, so this is the fastest city in the country to deliver to. Orders are dispatched within one to two business days, and metro Melbourne sits at the quick end of the two to ten day delivery window.

Shipping is a flat $10 for anything up to ten doors, anywhere in Australia, GST included. Full shipping details →

Common questions from Melbourne customers

Can a pet door be fitted into double glazing?

Yes, and it is common in Melbourne. The sealed unit is not drilled in place — the glazier orders a replacement unit made with the opening already in it, and the pet door is fitted into that. Choose a model rated to 28 mm or 32 mm, since that is where most domestic double glazed units land. Allow extra time compared with a single-glazed job, because the unit has to be manufactured before anything can be fitted.

Do you fit the doors yourselves?

No — Pet-Tek is the manufacturer. We have made Catwalk® and Dogwalk® doors since 1999 and we supply them; we do not carry out installations. Glass jobs go to a glazier, and one Victorian installer familiar with the range is listed above. Timber doors are designed to be fitted at home with the template supplied.

Will a pet door make the house cold?

Far less than an open door does. The flap closes onto a seal on all four sides and hangs shut under its own weight rather than resting ajar. On a cold night the four-way lock can be set to fully closed, which seals the opening entirely. A rigid flap also holds its shape against wind, where a soft flap tends to lift.

How do I know whether my glass is toughened?

Look for a small etched stamp in one of the bottom corners of the pane — toughened glass is required to carry one. It matters because toughened glass shatters if it is cut after toughening, so rather than cutting your existing pane the glazier supplies a new one, cut and drilled before it is toughened. The pet door itself is unaffected; only the method and the price change.

What does installation cost in Melbourne?

We cannot quote it, because we do not set it. Every installer prices their own work according to the door, the glass and where you are, and Pet-Tek takes no share of installation charges. Ask the installer directly, and tell them whether your glass is single, toughened or double glazed — that is the detail that moves the figure most.

Can I collect an order in Melbourne instead of having it delivered?

Yes. Local pickup appears as an option at checkout for Melbourne customers, at Rowville. Choose it in the delivery step and we will confirm when the order is ready. Otherwise the flat $10 shipping applies as normal.

Can I fit it myself into a timber door?

Yes, and most people do. Wood fitting doors come with a cutting template and instructions. You will need a jigsaw and a drill, and the job takes an hour or so. The range covers panels from 5 mm to 52 mm depending on model, so hollow-core and solid timber doors are both covered.

How long is the warranty?

Three years on the product, and it applies regardless of who fits the door. Workmanship on the installation itself sits with whoever carried it out. Read the full warranty →