RIV regulated wall vent

RIV valves are designed for supplying outdoor fresh air into the room with forced exhaust. The valve is made of ABS and consists of an external grille, a straight pipe and an internal adjustable grille with filter. The pipe can be adjusted to the wall thickness in the range of 50 to 400 mm. The air flow is regulated by a lever on the inner grille, the direction of flow can be influenced by rotating the grille, which has angled blades. To increase the insertion loss, the SGD mini 75 insertable damper can be used.