Aluminium flap shutter designed to ensure the vacuum or excess air pressure in ducts

Reversible gravity flap damper 

Fabrication :

- Anodized aluminium fins at 90 mm spacing, th. 1,5 mm

- Galvanized steel frame, with flange METU profile 30 mm at each end (width :180 mm)

- Silent stops (foam gaskets)

- stainless steel shaft

Dimensions :

- Any dimensions ≤ 2000 x 2000 mm, monobloc Grid <1000 x 1000 mm, grid with central reinforcement ≥ 1000 x 1000 mm

Options :

- non-standard dimensions

- different thicknesses

- connection ferrule

- stainless steel - epoxy paint

- anti bird wire mesh

- mosquito screen

- grids/filter/shutter combination

-counter frame to be sealed

- frame drilling

Fixing :

- with bolts at each angle in a ventilation duct

Conditions :

- max. air speed : 6m/s

- max back pressure : 170Pa