Glass Patio - Extension Height Guide

Modified on Wed, 9 Jul at 2:01 PM

How tall can I extend the Glass Patio Pet Door using extensions?

We currently offer two versions of the Glass Patio Pet Door:

Version 1 (V1) — Available from 2023 to June 2025
Version 2 (V2) — Released from June 2025 onwards

Each version includes key updates to installation and design features, so it's important to identify which one you have before purchasing accessories or replacement parts.

Glass Patio - General - How to Differentiate Between V1 & V2 Glass Patio Pet Doors

V2 Glass Patio Pet Door ( June 2025 > )

TOP METAL EXTENSION adds 160MM | 6.3"

MIDDLE GLASS EXTENSION adds 400MM | 15.7"

BOTTOM RISER adds 50MM | 2"'

COMBINATION	TOTAL HEIGHT
	No Extensions	1960–2120 mm
1	1 x Top Extension Add 160 mm H	2120–2280 mm
2	2 x Top Extensions Add 320 mm H	2280–2440 mm
3	1 x Top Extension Add 160 mm H 1 x Middle Extension Add 400 mm H	2520–2680 mm
4	1 x Top Extension Add 160 mm H 1 x Middle Extension Add 400 mm H 1 x Bottom Riser Add 50 mm H	2570–2710 mm
5	1 x Middle Extension Add 400 mm H	2360–2520 mm
6	1 x Bottom Riser Add 50mm H	2010–2170mm Flap position with bottom riser installed: S: 50 mm → 100 mm M: 100 mm → 150 mm L: 150 mm → 200 mm

We offer infographics that depict the dimensions and specifications covered in this article on the V2 Glass Patio Pet Door Spare Parts > Extensions product page. Additionally, some graphics are available to visually represent the dimensions and specifications within the article: Glass Patio - Size & Specifications.

V1 Glass Patio Pet Door (2023 > June 2025)

You can extend the total height of your Glass Patio Pet Door by using extension pieces. Each extension increases the height by 160mm, and a maximum of 2 extensions can be used at the top of the door.

Extension Height Range by Size:

	Patio Pet Door Only		1 x Extension		2 x Extensions
Size	Minimum	Maximum	Minimum	Maximum	Minimum	Maximum
Small	2050mm	2100mm	2210mm	2260mm	2370mm	2420mm
Medium	2045mm	2118mm	2205mm	2278mm	2365mm	2438mm
Large	2048mm	2126mm	2208mm	2286mm	2368mm	2446mm

Note: A maximum of 2 x Extensions can be used for the V1 Glass Patio Pet Door. The total height with extension includes the base unit plus any installed extensions. Extensions are sold separately.

Some door sizes are incompatible with the V1 Glass Patio Pet Door. See the section on 'Incompatible Door Heights' highlighted in this article for details: Glass Patio - Size & Specifications & Glass Patio - Is My Sliding Glass Door Suitable?