When the combustion air duct is connected directly to the return plenum for a furnace, the blower fan on the furnace pulls outdoor air in to the return plenum. To supply this air to the furnace room, ...

The SMART filter seal has been added to the Smart Air & Energy Solutions™ brand lineup of products. The filter seal is a durable, yet flexible, high-strength film designed to fit tightly over the air ...

NEC cabling installation requirements are straightforward, but markings and new offerings may create confusion. You're not alone if markings and listings are making your plenum cabling selection a ...