Broan 641, 647 Specifications

WALL CAPS

SPECIFICATION SHEET

Model WC638

For 3¼" x 14" duct

•

Spring-loaded

•

backdraft damper
and bird screen

26 GA CRCQ

•

Steel, black finish

Model 639

For 3¼" x 10" duct

•

Spring-loaded

•

backdraft damper
and bird screen

24 GA CRCQ

•

Steel, black
electrically-bonded
epoxy finish

Model 649

Same features as

•

Model 639

.025 Aluminum -

•

natural finish

Model 647

For 7" round duct

•

Spring-loaded

•

backdraft damper
and bird screen

.025 Aluminum -

•

natural finish

Model 843BL

For 6" round duct

•

Spring-loaded backdraft

•

damper and bird screen

22 GA CRCQ Steel, black

•

electrically-bonded epoxy finish

Attachment collar 1¼" long

•

Model 641

Same features as Model 843BL

•

.025 Aluminum - natural finish

•

Model 641FA

Same features as Model 641

•

Without backdraft damper

•

Intended for make-up air inlet

•

applications

Model 885BL

For 3" or 4"

•

round duct (4"
to 3" transition
included)

Spring-loaded

•

backdraft damper
and bird screen

24 GA CRCQ

•

Steel, black
electrically­bonded epoxy
finish

Broan-NuTone LLC Hartford, Wisconsin www.broan.com 800-558-1711

REFERENCE QTY. REMARKS Project

Location

Architect

Engineer

Contractor

Submitted by Date

90G 99042286L

Model 885AL

For 3" or 4" round duct (4" to 3" transition included)

•

Spring-loaded backdraft damper and bird screen

•

.025 Aluminum - natural finish

•

Model 643

For 8" round duct

•

Built-in backdraft damper

•

.025 Aluminum - natural finish

•

Attachment collar 3-3/8" long

•

Model 643FA

Same features as Model 643

•

Without backdraft damper

•

Intended for make-up air inlet

•

applications

Model 613

For 12" round duct

•

High capacity

•

Built-in backdraft damper and bird screen

•

.025 Aluminum - natural finish

•

Model 441

Gravity dampers

•

Collar with bird screen for attaching 10" round duct

•

24 GA CRCQ steel construction with aluminum louvers

•

Model 645

For 3" round duct

•

Polymeric construction - white finish

•

Model 646

For 6" round duct

•

Polymeric construction - white finish

•

Broan-NuTone LLC Hartford, Wisconsin www.broan.com 800-558-1711

Model 450 Flexible Wall Ducting Kit

Includes 5 ft. of 4", flexible, vinyl ducting, 4" diameter

•

metal duct connector, 2 duct clamps, 4" to 3" reducer and
a polymeric louvered wall vent

Model WVK2A Flexible Wall Ducting Kit

Includes 5 ft. of 4", flexible, 2-ply metallic

•

laminate ducting, 10" long 4" diameter
metal duct, 2 duct clamps, 4" to 3"
reducer, an engineered resin material
wall vent, and mounting screws

Duct conforms to UL181 Class 1 air

•

connector requirements

Not recommended for dryer venting

•