Weather Resistant Louvres
Osbournes Diffusers, Grilles and Louvres
 
WPL 50 Louvre
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 19.2 19.3 19.4 19.5 19.5 19.6 19.6 19.7
0.300 25.6 25.8 25.8 26.0 26.1 26.1 26.2 26.2
0.400 28.8 29.0 29.0 29.2 29.3 29.4 29.5 29.5
0.500 30.7 30.9 31.0 31.1 31.3 31.4 31.4 31.5
0.600 32.0 32.2 32.3 32.4 32.6 32.7 32.7 32.8
0.700 32.9 33.1 33.2 33.4 33.5 33.6 33.7 33.7
0.800 33.0 33.2 33.3 33.4 33.6 33.7 33.8 33.8
0.900 33.0 33.2 33.3 33.5 33.6 33.7 33.8 33.8
1.000 33.0 33.3 33.3 33.5 33.6 33.7 33.8 33.9
1.100 33.2 33.4 33.4 33.6 33.8 33.9 33.9 34.0
1.200 33.6 33.8 33.9 34.1 34.2 34.3 34.4 34.4
1.300 34.0 34.2 34.3 34.4 34.6 34.7 34.8 34.8
1.400 34.3 34.5 34.6 34.8 34.9 35.0 35.1 35.1
1.500 34.6 34.8 34.8 35.0 35.2 35.3 35.4 35.4
1.600 34.8 35.0 35.1 35.3 35.4 35.5 35.6 35.7
1.700 35.0 35.2 35.2 35.4 35.6 35.7 35.8 35.8
1.800 34.9 35.1 35.1 35.3 35.5 35.6 35.7 35.7
1.900 34.8 35.0 35.1 35.3 35.4 35.5 35.6 35.6
2.000 34.7 34.9 35.0 35.2 35.3 35.4 35.5 35.6
2.500 35.3 35.6 35.6 35.8 36.0 36.1 36.1 36.2

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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