Page 37 of Ventilation Fans by Broan-NuTone

broan ventilation fans ­ attic model 350 attic fan powered attic ventilator specifications gable mount model model 353 35316 attic size up to up to 1630 sq ft 2285 sq ft amps 3.4 3.9 cfm 1140/900 1600/1160 rpm 950 1420 height dome dia dome material wall control switches see page 47 model 350 up to 1500 sq ft 3.6 1050 1000 8 23-1/4 pvc model 355 up to 1715 sq ft 4.3 1200 1050 8 23-1/4 pvc roof mount model 356 up to 2285 sq ft 8.0 1600 1500 8 23-1/4 pvc model 358 up to 1715 sq ft 4.3 1200 1050 8 23-1/4 metal model rf-49br up to 1400 sq ft 4 1000 1050 9 24-1/2 metal model 433 automatic shutter accessory sold separately see below exhaust capacity hvi certified .03 static pressure higher cfm with model 433 shutter lower cfm with standard wood louvre the home ventilating institute hvi recommends 1 sq ft of open air inlet per 300 cfm of fan capacity the best location for these air intake vents is under the eaves with direct access to the attic vents for gable installations should be placed at the end of the house opposite the installed ventilator failure to provide these intakes could cause natural-draft gas appliances to backdraft model 433 automatic shutter for gable mount attic ventilators model 353 gable fan gable mount attic ventilators for broan models 353 and 35316 feature counter-balanced aluminum vanes that automatically open and close when the venilator turns on and off · steel reinforced for strength · weather-tight closure · easy to install 37

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