Reviews Air Duct Damper

HBW Three-Way Plastic Side Wall/Ceiling Register in White 10" w X 6" h for Duct Opening (Outside Dimension is 11.75" w X 8" h)

The Listed size 10″x 6″ is for inside duct opening measurement, actual outside dimension is 11.75″ X 8″.
All plastic construction with 1/2″ fin spacing for high air flow with rust proof feature perfect for areas with high moisture.
Three way air deflection design with bright white face and black damper in the back.
Multi-shutter damper with easy handle to adjust desired amount of air flow.
Two screw holes on each side with distance of 9″ and two screws are included.

Durable welded steel construction floor register for AC, heat & HVAC systems.
Easy "drop in" floor vent installation - no tools necessary.
Opposed blade damper for easy air flow adjustment.
Multi-angled rolled fins spread air evenly through your home.
Listed product sizes refer to the duct opening measurements, not the floor register itself.

The Model 504 does NOT come with a damper..
Fits 10-Inch round duct – use Model 472 transition/damper (available separately) for 8-Inch round duct.
Eliminate humidity from laundry rooms, tobacco smoke from rec rooms and workshops, or cooking fumes from kitchens with Broan’s high-efficiency utility ventilators.

HIGH-QUALITY VERSATILE FAN： Quiet, energy efficient exhaust fan operates with 110 CFM and 1.0 Sones to help control air quality is powerful enough for rooms (including bathroom) up to 105 sq-ft. Duct Diameter 4 inch.
HOUSING SIZE - Please note the size of the housing is 9 1/2 x 9 1/2 inch, resizing your existing ceiling opening will be needed if your current fan housing is smaller..
INSTALLATION - Torsion springs grille mounting - no tools necessary for a quick and easy installation. Compact housing fits easily between ceiling joists，No Attic Access Required..
EFFICIENT: Powerful ventilation reduces to quickly eliminate fogged mirrors at 110 CFM, so your vision will always be clear and your surroundings will always be comfortable.
RELIABLE PERFORMANCE: Detachable 4 inch polymeric duct with back draft prevention damper.Nalle Vent fans reduce air leakage by up to 50% compared to competitive models, resulting in better home performance via blower door tests and reducing cold and warm air backdrafts.

HIGH-QUALITY VERSATILE FAN： Quiet, energy efficient exhaust fan operates with 110 CFM and 1.0 Sones to help control air quality is powerful enough for rooms (including bathroom) up to 105 sq-ft.Duct Diameter 4 inch.
HOUSING SIZE – Please note the size of the housing is 9 1/2 x 9 1/2 inch, resizing your existing ceiling opening will be needed if your current fan housing is smaller..
INSTALLATION – Torsion springs grille mounting – no tools necessary for a quick and easy installation. Compact housing fits easily between ceiling joists，No Attic Access Required..
EFFICIENT: Powerful ventilation reduces to quickly eliminate fogged mirrors at 110 CFM, so your vision will always be clear and your surroundings will always be comfortable.
RELIABLE PERFORMANCE: Detachable 4 inch polymeric duct with back draft prevention damper.Nalle Vent fans reduce air leakage by up to 50% compared to competitive models, resulting in better home performance via blower door tests and reducing cold and warm air backdrafts.

Backdraft damper shutter – 4 inch – round – designed to prevent backdraft cold or warm air from flowing the wrong direction in air duct.
Easy installation – can be used in AC units, installation in dryer ducts, bathrooms, range hoods and heating systems, and more.
Heavy-duty, durable galvanized steel – strong aluminum butterfly flaps – designed to be long-lasting and functional.
Interior and exterior seal hold the unit in place in the air duct and prevent flaps from making loud clapping noise, spring-loaded flaps for positive....
Save energy and money by preventing backdraft – maintain the most desirable temperature, hassle-free, set it and forget it.

Durable welded steel construction floor register for AC, heat & HVAC systems.
Easy "drop in" floor vent installation - no tools necessary.
Opposed blade damper for easy air flow adjustment.
Multi-angled rolled fins spread air evenly through your home.
Listed product sizes refer to the duct opening measurements, not the floor register itself.

Durable welded steel construction floor register for AC, heat & HVAC systems.
Easy "drop in" floor vent installation - no tools necessary.
Opposed blade damper for easy air flow adjustment.
Multi-angled rolled fins spread air evenly through your home.
Listed product sizes refer to the duct opening measurements, not the floor register itself.

Engineered for extremely quiet operation to keep annoying fan noise to a whisper.
Can be mounted with vertical or horizontal ducting using included duct collar and back draft damper for 3 1/4" x 10" ducting.
Can be mounted with 7" round ducting using included duct collar and back draft damper.
Can be installed in a ductless format with charcoal odor filters sold separately.
Includes 18 watt Gu24 base fluorescent lamp about as bright as 150 watt incandescent bulb.
Also includes 4 watt night light socket (bulb not included).