Also is available in the following executions:

BN-D: With aluminium made, multiple leaf, air volume control damper with simultaneously opposite rotated blades.

BN-E: Accessible.

BN-FA: With air filter.

BN-D-E: Accessible and with aluminium made, multiple leaf, air volume control damper with simultaneously opposite rotated blades.

BN-D-FA: With air filter and aluminium made, multiple leaf, air volume control damper with simultaneously opposite rotated blades.

BN-E-FA: Accessible, with air filter.

BN-D-E-FA: Accessible, with air filter and aluminium made, multiple leaf, air volume control damper with simultaneously opposite rotated blades.

BN-L: Like ΒΝ but without external flange (LOUVER). Depth 37mm.

BN-IN304: Made by stainless steel 304. Maximum dimension 1200X1000. For width more than 550mm there is a 6mm wide brace in the middle.

BN-GLV: Made by galvanized steel. Maximum dimension 1200X1000. For width more than 550mm there is a 6mm wide brace in the middle.

BN-BOX: Box with aluminium support frame, aluminium or steel roof and BN grilles in the sides. Electrostaticaly painted in RAL color.