Duct System Calculator, METRIC

This calculator, complete with detailed instructions, enables HVAC system designers to design an average duct system without additional references. The only calculator in the industry to include the 0.0003 roughness factor duct friction loss data for designing straight, round, or rectangular sheet metal ducts. Also available in imperial. Circular slide rule, 1988

pages, Ed.,

Discount Price: $50.00 – List Price: $50.00