Instructions / Assembly

Heating and Cooling Essentials
radial and extended plenum, are described in detail.
"Rules of thumb" are provided for sizing a duct system
for efficient airflow. Detailed information on laying
out and fabricating duct systems is provided, and
covers the major types of duct materials: rectangular
metal duct, round metal duct, and insulated flexible
duct. Directions are given for installation of wall
stacks, supply air registers/diffusers, and return air
grilles. The use of duct insulation and of fiberglass
reinforcing membrane and mastic to seal duct air leaks
is covered.