Square ventilation grille - with non-return valve - for exhaust fan outlet - for 100 mm duct

General Description This square ventilation grille is designed with a backdraft damper, ideal for 100 mm duct exhaust fan outlets. Made of high-quality plastic, it offers a robust and durable construction. The flap closes automatically when not in use, protecting your home from odors, noise, and backdrafts. Technical Specifications Type: Square ventilation grille Material: High-quality plastic Duct diameter: 100 mm Installation This external ventilation grille can be inserted into a ventilation duct or flexible duct and then fixed to the wall using the screws provided. Use It is ideal for passive ventilation, air conditioning, heating, ventilation, and heat recovery.