- transparent flap, silent action
- with 360° circumferential seal (TPR)
- with turn-lock fastener
- incl. 2 tunnel elements
- can be extended with more tunnel elements
- depth 20–52 mm
- total measurements 20 × 22 cm
- cut out size 15.9 × 16.8 cm
- flap size 14 × 15.5 cm
- plastic
