Starduct Transfer Weather Louver are made of up to 2.0mm extruded aluminum alloy grade A6063-T5. Free Area ~60% . The V-shape blades for storm-resist are arranged evenly @ gaps of 90-150mm. When the grille width over 1000mm, blades should be reinforced. All frame corners are reinfored by pressing special corner connectors for prevent them from twist and paint break

Powder coating finish in RAL9010 standard colors or optional color as requested with Jotun paint or equivalent, service life over 5 years

The stainless steel anti-insects net is available as an option

The max. width could be up to 3000mm with sub-frame @ every 1 m space.

Production standards : AMCA 500L

Scope of testing: A) Sound Power Level (NC) B) Air Volume versus Static Pressure C) Area Factor D) Throw Pattern (test report pending)