Heavy duty hurricane louvres with a double weatherstop
Osbournes Diffusers, Grilles and Louvres
 
WPL 100 Louvres
Weather resistant louvres with a double weatherstop

Free Area % (width 0.300 - 0.900)
Louvre Size Versus 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 14.6 15.3 15.6 15.8 16.0 16.3 16.4 16.5
0.300 21.9 23.0 23.4 23.7 24.1 24.6 24.7 24.9
0.400 25.6 26.9 27.3 27.7 28.2 28.7 28.8 29.0
0.500 27.8 29.2 29.7 30.1 30.6 31.2 31.3 31.5
0.600 30.0 31.5 32.0 32.4 33.0 33.6 33.8 34.0
0.700 32.1 33.8 34.3 34.7 35.4 36.0 36.2 36.4
0.800 33.8 35.4 36.0 36.5 37.1 37.8 38.0 38.3
0.900 35.0 36.8 37.3 37.8 38.5 39.2 39.4 39.7
1.000 36.0 37.8 38.4 38.9 39.6 40.3 40.5 40.8
1.100 36.8 38.7 39.3 39.8 40.5 41.2 41.4 41.7
1.200 36.9 38.7 39.3 39.8 40.6 41.3 41.5 41.8
1.300 36.9 38.7 39.3 39.8 40.5 41.3 41.5 41.8
1.400 36.8 38.7 39.3 39.8 40.5 41.3 41.5 41.8
1.500 36.8 38.7 39.3 39.8 40.5 41.3 41.4 41.7
1.600 36.8 38.7 39.3 39.8 40.5 41.2 41.4 41.7
1.700 37.1 38.9 39.5 40.0 40.8 41.5 41.7 42.0
1.800 37.5 39.4 40.0 40.5 41.3 42.0 42.2 42.5
1.900 37.9 39.8 40.4 40.9 41.7 42.4 42.6 42.9
2.000 38.3 40.2 40.8 41.3 42.1 42.8 43.0 43.4
2.500 38.6 40.6 41.2 41.7 42.5 43.3 43.5 43.8

Osbournes Ltd, Diffusers, Grilles and Louvres
Osbournes' ventilation solutions control condensation, humidity & mildew

Phone: +64 (9) 622 0650   Mobile: (027) 527 0069 Fax: +64 (9) 622 0651  
Email: Contact Osbournes   Enquiries: General Enquiry Form
Street Address: 112b Mays Rd, Onehunga, Auckland Mailing Address: 112b Mays Rd, Onehunga, Auckland 1061, New Zealand

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