Aluminum ventilation grill WB900

stainless steelgalvanized steelsquare

The sand trap louvre, type -B900, is an external louvre used in dry, dusty or sandy environments. Especially designed to remove the bulk of airborne sand and dust from inlet air whilst maintaining reasonable air flow rate characteristics by means of a special double U-blade design. Sand and dust are evacuated from the base of the louvre by a special sand collection/disersion cill, keeping maintenance to a minimum. The sand trap louvres can be used as natural ventilators or to alleviate the load on the main filtration stages of air conditioning equipment. Aluminium sand trap louvre demanding no maintenance, with a dlouble U-profile and a sand evacuation underneath the louvre The louvre is equipped with a birdscreen in galvanised steel ire-netting Self-cleaning by the free sand Outdoor 1 way throw Exhaust Rectangular execution • self-cleaning due to the free sand outlet • sea-waterproof (IB and WB) • available with steps of 50 mm in length and of 1 mm in height • construction in aluminium: - U-profile - thickness 1,5 mm - mounting frame- thickness 2 mm - non anodised • construction in galvanised steel: thickness 1,5 mm • RAL colour upon request • stainless steel construction-thickness 1,2 mm Application for a free flow or duct junction. Indicated speeds are the speeds for a nominal flow (L x H). Triple this speed to know the speed in the slots.