Cold air return
The ductwork (and related grills) that carries room air back to the furnace for re-heating.
The ductwork (and related grills) that carries room air back to the furnace for re-heating.
Nominal 1- or 2-inch-thick members connecting opposite roof rafters. They serve to stiffen the roof structure.
A member of a truss system which connects the bottom and top chords and which provides downward support.
The outdoor component of a cooling system. It includes a compressor and condensing coil designed to give off heat.
A legal document which specifies the what, when, where, how, how much, and by whom in a construction project. A