Ventilation Grille 100 mm Square with Filter

Passive ventilation without motor or electricity - 100 mm wall aeration kit allows natural air circulation thanks to external wind and pressure differences between interior and exterior. With no motor, no wiring and no power consumption, it offers a simple solution to promote air renewal in home Adjustable Flow Vent - square inner grille has an adjustable air vent to suit different ventilation needs. Simply remove front cover, then press and turn inner dial to adjust air flow level according to room, season or comfort you want Telescopic duct 100mm for wall penetration - Equipped with an extendable duct of 100mm diameter, this wall ventilation kit easily adapts to different wall thicknesses. Its adjustable length fits walls approximately 18 to 34 cm thick, ideal for a through-wall installation between inside and outside Built-in filter to limit dust - Built-in filter helps reduce entry of dust, small debris and light particles during natural air circulation. Convenient design helps maintain cleaner, more comfortable ventilation in everyday life 45° angled outer grille - outer grille with 45° angled blades helps to limit direct rain entry while maintaining air flow. This passive air intake kit is suitable for bedrooms, attics, garages, basements, crawl spaces, utility rooms, technical rooms and other enclosed spaces requiring natural aeration