Heating and Cooling

Register box for connecting round pipe or flexible duct to floor registers. Galvanized steel with fiberglass insulation on inside of box to reduce noise and control condensation.

Prevents water from leaking between the collar and chimney pipe. Galvanized. For single wall vent pipe.

This heat shield features greater safety by reducing clearance from combustible materials by up to 50%. Adjustable from 22.5" to 42" (57.1 cm to 107 cm) it will adapt to 6", 7", and 8" stovepipe. Includes screws. Tabs at bottom of stove pipe shield can...

External screen prevents entry of most bird species. Aluminum top and galvanized flashing. Slips inside of pipe and locks into place with spring clips. Must not be used for woodburning applications. Size refers to the inside diameter of the pipe or...

Knob-operated worm gear adjusts butterfly valve, to full open or close. Controls volume evenly, not air pattern minimum air restriction. Steel ring has brown enamel finish. Includes adjustable handle.

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 seal provides quiet efficient operation. Ideal for dryer...

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.

All-steel construction. Wide border compensates for oversize floor openings. Strong rolled edge face bars set at graduated angles for wide diffusion. Parallel valves deflect air to wall or into room.

Stamped brass designed for durability, function, and beauty. Contemporary louver design with diffuser.

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.

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 collar. All metal rigid construction.

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 products are built to last and are trusted by plumbers...