Petsafe Staywell Tunnel Extensions

Petsafe/Staywell Deluxe Cat Flap Tunnel Extension. For use with 300, 320, 340, 400, 420 and 500 Doors. For extra deep cavity doors and walls, each clip-on tunnel gives 47mm (17/8") extra tunnel length. Available in White (310), Brown (330) or Grey (350).