Broan-NuTone 437, 634, 634M, 644, 636 SPECIFICATION SHEET
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ROOF CAPS
Model 437
For pitched
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roof installation
High-capacity
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design - up to 1200 CFM
24 GA. CRCQ steel, electrocoat acrylic finish
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Built-in spring-loaded backdraft damper and bird screen
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For 8-in. to 10-in. round duct
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SPECIFICATION SHEET
SPECIFICATION SHEET
Model 636
For pitched roof installation
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24 GA. CRCQ steel,
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electrocoat acrylic finish
Built-in backdraft damper and bird screen
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For 3" or 4" round duct
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Model 636AL
Same as Model 636 .025 - in Aluminum
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Natural finish
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Model 443 Flexible Roof Ducting Kit
Includes 8 ft. of 4", flexible, vinyl ducting, 4" diameter
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metal duct connector, 2 duct clamps, 4" to 3" reducer
and Model 636 Roof Cap
Model 634
For pitched roof installation
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24 GA. CRCQ steel,
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electrocoat acrylic finish
Built-in backdraft damper and bird screen
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For 3¼" x 10" or up to 8" round duct
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Model 634M
Same as Model 634 except with 6" round duct collar
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Model 644
Same as Model 634 except .025 aluminum
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Natural finish
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Broan Hartford, Wisconsin www.Broan.com 800-548-0790 www.NuTone.com 888-336-3948
www.Broan.ca 877-896-1119 www.NuTone.ca 877-896-1119
REFERENCE QTY. REMARKS Project
Location
Architect
Engineer
Contractor
Submitted by Date
Model RVK1A Flexible Roof Ducting Kit
Includes 8 ft. of 4", flexible, 2-ply metallic laminate
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ducting, 4" diameter metal duct connector, 2 duct
clamps, 4" to 3" reducer and Model 636 Roof Cap
Duct conforms to UL181 Class 1 air connector
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requirements
Not recommended for dryer venting
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81F 99041930T
Model 611
For flat roof installation
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.025 Aluminum - natural finish
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Built-in bird screen
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For up to 8" round duct
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Model 611CM
For curb mount installation
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Other features same as Model 611
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Model 612
For flat roof installation
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.025 Aluminum - natural finish
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Built-in bird screen
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For up to 12" round duct
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Broan Hartford, Wisconsin www.Broan.com 800-548-0790 www.NuTone.com 888-336-3948
www.Broan.ca 877-896-1119 www.NuTone.ca 877-896-1119
Model 612CM
For curb mount installation
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Other features same as Model 612
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