WS: overpressure dampers to protect air intake or expulsion openings 

WSE: for air expulsion.

WSI: for air intake.

CHARACTERISTICS:

• Frame: made from extruded aluminium, 25 mm wide, with rounded edges, constructed in four parts connected invisibly by mechanical assembly.
• Fins: made of extruded aluminium with 50 mm spacing, inserted into a plastic guide support incorporated into the frame.
• Transverse reinforcement: provided on all sizes with base dimension greater than 800 mm.
• Protection grille: available in the UR version with fixed inclined fins and in the UQ version with square mesh.
• Bird protection net: available.
• Grille installation: with traditional screw system directly in the duct or on the wall.
• Finish: available in natural anodised aluminium
• painting available on request.