Exhaust Louvres
Osbournes Diffusers, Grilles and Louvres
 
Exhaust 100
Exhaust Louvres

Free Area % Charts (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 28.4 28.6 28.7 28.9 29.0 29.1 29.2 29.3
0.300 40.9 41.2 41.3 41.6 41.8 41.9 42.0 42.1
0.400 44.5 44.9 45.0 45.3 45.5 45.7 45.8 45.9
0.500 49.0 49.5 49.5 49.9 50.1 50.3 50.5 50.6
0.600 49.9 50.4 50.4 50.8 51.1 51.2 51.4 51.5
0.700 52.5 53.0 53.1 53.4 53.7 53.9 54.1 54.2
0.800 52.6 53.1 53.2 53.5 53.8 54.0 54.2 54.3
0.900 54.5 54.9 55.0 55.4 55.7 55.9 56.1 56.2
1.000 54.2 54.7 54.8 55.2 55.5 55.7 55.8 55.9
1.100 55.7 56.2 56.3 56.7 57.0 57.2 57.3 57.5
1.200 55.3 55.8 55.9 56.3 56.6 56.8 56.9 57.1
1.300 56.6 57.1 57.2 57.6 57.8 58.1 58.2 58.3
1.400 56.1 56.6 56.7 57.1 57.3 57.6 57.7 57.9
1.500 57.2 57.7 57.8 58.2 58.4 58.7 58.8 59.0
1.600 56.7 57.2 57.3 57.7 57.9 58.2 58.3 58.4
1.700 57.6 58.1 58.2 58.6 58.9 59.1 59.3 59.4
1.800 57.1 57.6 57.7 58.1 58.4 58.6 58.8 58.9
1.900 57.9 58.4 58.5 58.9 59.2 59.4 59.6 59.7
2.000 57.5 58.0 58.1 58.5 58.8 59.0 59.1 59.3
2.500 58.6 59.1 59.2 59.6 59.9 60.1 60.3 60.4

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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