cat flap window insert comparison - September 2026

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Last updated on 02.09.2026

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Ideal Pet Products Aluminum Sash Window Pet Door, Adjustable to Fit Window Widths from 33" to 38", Cat Flap 6-1/4” x 6-1/4” Flap Size

IDEAL PET PRODUCTS SINCE 1979

free shipping

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9,9

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PetSafe 2-Piece Sliding Glass Cat and Dog Door, Medium | No Cutting, Durable, Weather Resistant

PetSafe

17% off

free shipping

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9,8

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Sure Petcare SureFlap Microchip Cat Flap, RFID Collar Tags and Microchip Compatible, One-Button Control, Install in Doors, Windows and Walls, White, 4 x AA Batteries Required Not Included

SureFlap

free shipping

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9,7

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Cat Door for Window, Quick Damage-Free Install, 36"- 40" Width Adjustable, All Aluminum Frame, 4-Way Lock, Magnetic Closure Cat Window Door, Extra Window Sealing Strips(XL)

Petoasis

free shipping

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9,5

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JUBITAIL Window Cat Door Insert for Vertical Sash Windows, 23.5-37.5 in | No-drill adjustable aluminum frame; clear-view panel; 4-way lock; weather seals; for apartments, rentals and catios

JUBITAIL

17% off

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9,4

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LIBBEPET Window Cat Door, Adjustable Window Width 31"-36", Large | 4 Way Lock Cat Door for Window, 7.8"×8.3" Flap for Cats ≤25lbs, Weatherproof Aluminum Alloy Frame, Magnetic Flap Brush Strips

LIBBEPET

free shipping

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9,3

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Liberty Cat Door for Sash Windows | Cat Door for Aluminum Frame Windows | Economical Sturdy Window Insert | White Frame | 32" - 33.5" Width Range

Liberty Pet Door

free shipping

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9,3

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Fdit Cat Flap Door for Cats Dogs Pet, Large Cat Flap Door for Windows Sliding Glass Doors With 4 Locking Possibilities (Round Transparent)

Fdit

free shipping

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9,3

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ZeroMOUSE 2.0 – Smart Add‑On for Microchip Cat Flaps | Prey‑Detection Module (Mice & Birds) for Microchip‑Activated/Electronic Cat‑Flaps | App Control | Weatherproof | Fast, Easy Install

zero mouse

free shipping

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9,2

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Purrfect Cat Door - No-Flap Interior Door for Cats Up to 20 lbs, Easy DIY Setup, Secured Installation in Minutes, No Training Needed

Purrfect Portal

free shipping

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9,2

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Aluminum Cat Door for Windows - Adjustable to Fit Window Width 24"-28", Quick-Fit Cat Door Window Insert, Magnetic Suction Design, Perfect for Cats

Tool-Free Installation - The aluminum cat door fits most sliding windows (24"-28" wide) and installs/removes in minutes without damaging your window—ideal for renters or eco-conscious pet owners

£ 114.95 free shipping

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Adjustable Ventilated Pet Door for Window 28.3"-32.6" Wide, White Aluminum Frame + Stainless Steel Mesh | Breathable Bug-Proof | 4-Way Lock Magnetic Closure Cat Window Door,Cat Door for Window Insert

【Ventilated Window Cat Door】Features heavy-duty aluminum frame and stainless steel screen mesh, corrosion-resistant and more durable(supports up to 30lbs). The built-in lockable pet door combines 4-way security locks with magnetic auto-closing

£ 53.99 free shipping

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SAKSUN Cat Door for Window Weatherproof: Aluminum Frame Flap Pet Door Quick Fit Window Insert - Easy Adjustable to Fit Windows Width 23"-28" - 4 Secure Lock Modes with Magnetic Closure for Cats Doggy

Effortless Access & Maximum Security: The window cat door features a 4-way locking mechanism: 2-way closing, 2-way opening, outward opening, and inward opening. You can freely adjust the operation mode to ensure your pet stays in or out as needed and prevent unwanted animal entry. The internal lock-out slide of cat window door adds extra security, helping deter curious wildlife.

£ 110.58 free shipping

To the product (1 offer)

17% off

Kerbl Rustica Cat House, 57 x 45 x 43 cm

Kerbl Pet

£ 46.39 free shipping

Only:

9hrs

18min

40sec

To the product (2 offers)

NIAOMAOGOU Cat Door for Window, Aluminum Cat Door Window Insert with 4 Secure Lock Modes, Magnectic Closure for Cats, Fit Window Width 32"-36", White

【EASY INSTALLATION】 This cat door for window is carefully designed and suitable for most sliding windows. Simply follow the instructions to quickly and tool free install it in minutes without damaging the window, providing instant access for pets.

£ 109.57 free shipping

To the product (1 offer)

5% off

Pet Door for Glass Windows, 4-way Locking Cat Flap, Small Dog and Cat Entry

Cocoarm

£ 26.21 free shipping

To the product (1 offer)

16% off

Ferplast Swing 9 Large Cat & Medium Dog Flap, 4-Way, White | Roomy universal pet door with 4-way locking, Wind Stopper and installation tunnel included

Ferplast

£ 34.92 free shipping

Only:

9hrs

18min

40sec

To the product (1 offer)

Upgraded Pet Cat Door for Window, Adjustable Width of 35"-46" Window Cat Door Insert, Quick Installation Pet Doors for Cats Small Dog with Aluminum Frame, Tight Seal, Safety & Weatherproof, HD Glass

【Tool-Free Easy Installation】This cat window door is perfect for users who want a non-destructive installation. Simply insert it into the sliding window track; no drilling or tools are required. Installation is easy and won't damage walls or windows. It solves the problem of pets freely entering and exiting, making it ideal for renters or anyone who wants to maintain the aesthetics of their home.

£ 109.99 free shipping

To the product (1 offer)

PiuPet 8x3m Transparent Cat Net - Tear-Resistant Netting for Balcony | UV-resistant nylon mesh with 3x3cm grid. Includes fastening rope, hooks and dowels for window guard and catio installation.

PiuPet

£ 27.98 free shipping

To the product (1 offer)

Cat Mate Microchip Activated Cat Flap (360) for Cats & Small Dogs, Grey

MICROCHIP ACTIVATED ENTRY: Reads microchips or Cat Mate ID Discs, sold separately, allows access for up to 30 cats. Compatible with 15-digit ISO microchips and AVID microchips. Not compatible with 10-digit microchips or those containing letters

£ 54.99 free shipping

To the product (2 offers)

Sliding Cat Door for Window, 22"-28.5" Adjustable Width, 2-Min Install | 4 Locking Modes, Aluminum Frame, HD Glass, Magnetic Closure, Weatherproof Pet Door Window Insert for Cats

【 2-Min Tool-Free Install】 – Designed specifically for sliding windows, it requires no damage to walls and can be installed in minutes by simply placing it into the window track, offering zero-installation barriers.

£ 108.99 free shipping

To the product (1 offer)

Cat Door for Window, Aluminum Frame Window Cat Door Insert for 32"-36" Sash Windows, Magnetic Flap with 4 Locking Modes Cat Window Door, Weatherproof, Easy Access for Cats & Small Pets

TOOL-FREE INSTALLATION & REUSABLE: This aluminum cat door fits most sliding windows (32"–36" wide) and installs in just 10 minutes—no tools, no drilling, no damage. Fully removable and reusable, it’s an ideal solution for renters or temporary setups.

£ 123.49 free shipping

To the product (1 offer)

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