QEF High Performance Weather Louvres

QEF 50 High Performance Louvre

Double bank curved blade weather louvre pitched at 50mm. The top performing horizontal louvre tested to date. Class A up to 2.4 m/s

QEF 50 Chevron Blade Louvre

A narrower double bank curved blade weather louvre pitched at 50mm. Its blade profile matches the 50 Curved blade allowing them to be used on the same elevation. Class A up to 1.0 m/s

QEF Vertical Louvre

Multi pass curved blade louvre pitched at 37mm, with louvre blades set in the vertical. The results achieved at BSRIA exceeded all previous records with an A1 classification up to 3.5 m/s face velocity.