Vents and venting systems are individual products or complete systems that allow for the exchange of air from or within an enclosed area

HVAC ductwork includes pipe or closed conduits made of sheet metal, fiberglass board, or other suitable material for conducting air to and from an air handling unit.

Energy recovery and heat recovery ventilators are mechanical exchange units that help reduce heating costs by retaining existing heat and optimizing the interior moisture content of the air.

Flue and chimney systems contain all types of products used primarily to evacuate exhaust from furnaces, boilers and other fuel burning devices.

Antennas are structures or devices used to collect or radiate electromagnetic waves.

Roof and floor trusses are support structures that consist of one or more triangular units that are made with straight, slender members and connected at the ends as joints.

Industrial silencers and mufflers absorb and attenuate noise levels from machinery and other sources for environmental amelioration and regulatory compliance.