Osbournes Grilles, Diffusers & Louvres
 

WPL80 Louvres   Free Area % (width 0.300 - 0.900)

A weather resistant louvre ideal for commercial ventilation applications. The WPL80 comes in a channel or flange option, with bird mesh fitted to the rear as standard.

Louvre Size v.s. Free Area Percentage

Height

Width (0.300 - 0.900)
0.300 0.400 0.450 0.500 0.600 0.750 0.800 0.900
0.200 17.5 18.4 18.7 18.9 19.3 19.6 19.7 19.8
0.300 23.3 24.5 24.9 25.2 25.7 26.1 26.3 26.4
0.400 26.9 28.2 28.7 29.0 29.6 30.1 30.2 30.5
0.500 30.8 32.4 32.9 33.3 33.9 34.5 34.7 34.9
0.600 33.5 35.1 35.7 36.2 36.8 37.5 37.7 37.9
0.700 35.0 36.8 37.3 37.8 38.5 39.2 39.4 39.7
0.800 35.0 36.8 37.3 37.8 38.5 39.2 39.4 39.7
0.900 35.0 36.8 37.3 37.8 38.5 39.2 39.4 39.7
1.000 35.1 36.8 37.4 37.9 38.6 39.3 39.5 39.8
1.100 36.1 37.9 38.5 39.0 39.8 40.5 40.7 41.0
1.200 37.0 38.9 39.5 40.0 40.7 41.5 41.6 41.9
1.300 37.7 39.6 40.2 40.7 41.5 42.2 42.4 42.7
1.400 37.5 39.4 40.0 40.5 41.3 42.0 42.2 42.5
1.500 37.3 39.2 39.8 40.3 41.1 41.8 42.0 42.3
1.600 37.2 39.0 39.7 40.2 40.9 41.7 41.8 42.1
1.700 37.7 39.6 40.2 40.7 41.5 42.2 42.4 42.7
1.800 38.2 40.1 40.7 41.3 42.0 42.8 43.0 43.3
1.900 38.6 40.6 41.2 41.7 42.5 43.3 43.5 43.8
2.000 38.5 40.4 41.1 41.6 42.4 43.1 43.3 43.6
2.500 39.1 41.1 41.7 42.2 43.0 43.8 44.0 44.3