Insulated flexible ducts should be properly suspended in an attic installation to allow free circulation of ambient air all around the surface of the duct, according to the ADC. Avoid directly laying ...

Designed for flexible duct media, Eco-Touch® insulation delivers thermal and acoustical characteristics to HVAC systems in residential and commercial settings. It is designed with an impervious inner ...

These flexible, insulated feeder ducts are only 2 inches to 3 inches in inner diameter. In diameter, and air moves through them at about 1,500 feet per minute (fpm) ...

Duct liner is used in the interior of sheet metal ducts and comes as either flexible blankets or rigid boards of insulation. These liners come in thicknesses of ½ to 2-inches and are made of the ...

Older furnace designs need the "tube" you describe, an insulated flexible duct called the combustion air supply. It is critically important because it delivers outside air needed for the proper ...

Pro-R Double Wall is a top market choice for specialty applications like wastewater treatment. Pro-R Double Wall is a pre-insulated phenolic duct solution available nationwide. The Patented Pro-R ...

From there, the ductwork rises up into the attic, which is insulated on the floor and well ventilated. We first noticed water accumulating in the closet’s flexible duct last winter.