50mm Double Bank Weather Louvres

For intake or extract air, the 45° blades are fixed at 50mm centres and arranged in double bank formation to offer higher levels of rain defence effectiveness.

Heavy duty construction allows large panels to be produced with unbroken blades. Larger areas can be covered using multiple panel assemblies which will incorporate narrowline visible mullions.


From extruded aluminium sections, frame 3.0mm thick, blades 2.0mm thick. All frames to be of fully welded construction. Fitted as standard with rear galvanised steel bird mesh screen.

Size and Weight

From 600 x 600 to 3000 x 2000 in a single unit. Larger sizes are available in multiple units. Concealed rear mullions when width exceeds 1200mm.

Average weight: 25.0 kg/m2.

Average free area: 48%.

Spec with NBS chorus
50mm Double Louvre product
50mm Double Bank Weather Louvres

Louvre range

Sand trap Louvre product image
Sand Trap Louvres

Sand Trap Louvres

The double row of vertically staggered blades trap the airborne particles which are evacuated via an integral drain-off chute to the atmosphere.