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

Free Area m2 (Width 1.000 - 2.500)
Louvre Size Versus Free Area m2

Height
Width (1.000 - 2.500)
1.000 1.200 1.250 1.500 1.750 2.000 2.250 2.500
0.200 0.04 0.05 0.05 0.06 0.07 0.08 0.09 0.10
0.300 0.08 0.10 0.10 0.12 0.14 0.16 0.18 0.21
0.400 0.12 0.15 0.15 0.19 0.22 0.25 0.28 0.32
0.500 0.18 0.21 0.22 0.27 0.31 0.36 0.41 0.45
0.600 0.23 0.28 0.29 0.35 0.41 0.47 0.53 0.59
0.700 0.28 0.34 0.35 0.43 0.50 0.57 0.65 0.72
0.800 0.32 0.39 0.40 0.49 0.57 0.66 0.74 0.82
0.900 0.36 0.43 0.45 0.55 0.64 0.74 0.83 0.93
1.000 0.40 0.48 0.51 0.61 0.72 0.82 0.93 1.03
1.100 0.45 0.55 0.57 0.69 0.81 0.93 1.05 1.17
1.200 0.51 0.61 0.64 0.77 0.91 1.04 1.17 1.31
1.300 0.56 0.68 0.71 0.85 1.00 1.15 1.29 1.44
1.400 0.60 0.72 0.76 0.91 1.07 1.23 1.39 1.54
1.500 0.64 0.77 0.81 0.97 1.14 1.31 1.48 1.65
1.600 0.68 0.82 0.86 1.04 1.21 1.39 1.57 1.75
1.700 0.73 0.88 0.92 1.12 1.31 1.50 1.69 1.88
1.800 0.78 0.95 0.99 1.20 1.40 1.61 1.82 2.02
1.900 0.84 1.01 1.06 1.28 1.50 1.72 1.94 2.16
2.000 0.88 1.06 1.11 1.34 1.57 1.80 2.03 2.26
2.500 1.11 1.35 1.41 1.70 1.99 2.29 2.58 2.87

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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