Dog Door for Screen Door Large 4-Way Locking Pet Flap Window Insert Mesh Gate Cat Tunnel Free Access | Koossa

Dog Door for Screen Door Large 4-Way Locking Pet

A dog door for screen door that installs in mesh windows without cutting permanent holes. This large 4-way locking pet flap features a mesh screen insert (36×31cm opening) that replaces part of your window screen, giving dogs and cats free access while keeping insects out. The 4-way lock system lets you control access — in only, out only, both ways, or locked shut. Made from durable ABS plastic with smooth edges. 42×37cm external frame fits most standard screen windows. For pet owners who want garden access without installing a wall-mounted door.

Why this door works

• Screen window installation: Mounts in mesh window screens — no drilling holes in walls, doors, or glass
• 4-way locking control: Set to in-only (pets can enter but not exit), out-only (exit but not enter), both ways (free access), or fully locked
• Large opening: 36×31cm internal clearance suits medium to large cats and small to medium dogs — measure your pet first
• Weather-resistant ABS: Durable plastic frame withstands sun, rain, and repeated use without warping or cracking
• Smooth edges: No sharp points or rough seams — safe for pets pushing through repeatedly

Made for pets who use windows for garden access

Perfect for ground-floor windows opening onto gardens or patios, cat owners who want outdoor access without leaving windows open, rental properties where permanent door installation isn't allowed, or seasonal use where you remove the insert in winter. Whether it's letting your cat roam during the day, giving your small dog toilet access, or controlled outdoor time, this handles it. The mesh screen design maintains airflow and insect protection, the removable frame means you can take it out when not needed, and the 4-lock settings give you control over when pets can actually use it. A favourite with renters and pet owners who don't want permanent modifications.