Weather Resistant Louvres
Osbournes Diffusers, Grilles and Louvres
 
WPL 80 Louvres
Weather Resistant Louvres

Free Area % (Width 1.000 - 2.500)
Louvre Size Versus Free Area Percentage

Height
Width (1.000 - 2.500 )
1.000 1.200 1.250 1.500 1.750 2.000 2.250 2.500
0.200 20.0 20.1 20.2 20.3 20.4 20.5 20.5 20.6
0.300 26.6 26.8 26.9 27.1 27.2 27.3 27.4 27.4
0.400 30.6 30.9 31.0 31.2 31.3 31.4 31.5 31.6
0.500 35.2 35.5 35.5 35.8 35.9 36.1 36.2 36.3
0.600 38.2 38.5 38.6 38.8 39.0 39.2 39.3 39.4
0.700 39.9 40.3 40.3 40.6 40.8 41.0 41.1 41.2
0.800 39.9 40.3 40.3 40.6 40.8 41.0 41.1 41.2
0.900 39.9 40.3 40.3 40.6 40.8 41.0 41.1 41.2
1.000 40.0 40.3 40.4 40.7 40.9 41.0 41.2 41.3
1.100 41.2 41.6 41.6 41.9 42.1 42.3 42.4 42.5
1.200 42.2 42.6 42.6 42.9 43.1 43.3 43.4 43.5
1.300 43.0 43.3 43.4 43.7 43.9 44.1 44.2 44.3
1.400 42.8 43.1 42.2 43.5 43.7 43.9 44.0 44.2
1.500 42.6 42.9 43.0 43.3 43.5 43.7 43.8 43.9
1.600 42.4 42.8 42.8 43.1 43.4 43.5 43.6 43.7
1.700 43.0 43.4 43.4 43.7 43.9 44.1 44.2 44.3
1.800 43.5 43.9 44.0 44.3 44.5 44.7 44.8 44.9
1.900 44.1 44.4 44.5 44.8 45.0 45.2 45.3 45.4
2.000 43.9 44.3 44.4 44.7 44.9 45.0 45.2 45.3
2.500 44.6 45.0 45.0 45.4 45.6 45.7 45.9 46.0

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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