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4 In. R2 Pro wall exhaust hood white, Innovative damper design prevents back drafts and heat loss. Designed for maximum airflow. Energy efficient. Weighted damper prevents back-draft. 100% gasket...

Concrobium Moisture Grabbers XL provide humidity reduction technology for large, indoor areas. The unique water-absorbing pouches absorb and eliminate excess moisture in areas that are prone to...

Cast-iron. Converts 30 gallon or 55 gallon drum into woodburning heater. Includes cool touch cam-lock type door, spin dial draft control, mounting legs, stovepipe collar and hardware. Barrel and...

Adjustable periscope 0 inches to 5 inches. Use where outlets overlap or are very close. Baffles help direct airflow in 3-inch to 5-inch situations. Sections are not reversible. Draw band female...

4 In. dryer wall vent cap. Modern, flush mount design with magnetic seal that allows for maxiumum air flow and easy clean access. Constructed with powder coated galvanized steel.

Sludge Treat storage tank additive cleans and conditions heating system fuel oil. Prevents fuel-related failures, improves combustion efficiency, reduces soot formation and conserves energy. Hercules...

True filter, compatible with the Perfect Aire 1PAPUV27 air purifier. Captures 99.97% of all airborne particles as small as 0.3 microns such as , viruses, dust, dust mites, mildew, mold spores, pet...

The Lambro 3-1/4 In. x 10 In. plastic exhaust vent is ideal for venting through the wall. This vent is used for bath fan exhaust, range hood exhaust, microwave exhaust and other general venting...

For use with solid fuel appliances such as woodstoves. 90 deg. angle. For single wall pipe. Elbows can be adjusted to any angle between a straight line and a right angle.

Stamped steel construction with turnback frame. 2 grille bars to an inch 40 deg. down defection. Size in description is opening size. White.

Furnace humidifier filter. Improve humidification with a new replacement pad. Materials and workmanship equal manufacturer specifications. Fits Aprilaire 110, 250, 500, 500A, 558, CHIPPEWA 220. Fits...

Caps keep vent pipes dry. Prevents internal water damage, resists backdrafts, and promotes positive air flow. Made from galvanized steel.