Regel-air Fensterfalzlüfter FFL Typ 20 RF Set Basic Sehr einfache Verarbeitung

Sehr einfache Verarbeitung

Sturdy design with double reinforced strap

5-piece shaft connector

Groove depth: 13 mm

wall penetrations

Regel-air Fensterfalzlüfter FFL Typ 20 RF Set Basic Sehr einfache VerarbeitungRegel air window rebate ventilator FFL type 20 RF set The Regel air FFL ventilation system is a self regulating, plastic window rebate ventilator designed for installation in pairs. It features automatic airflow limitation. The Regel air FFL window rebate ventilator is concealed within the upper, un rigged area of the window. When the window is closed, the ventilation system is invisible from both the inside and outside. As wind pressure increases,