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• The air duct calculator is designed to calculate performance on duct work, registers and grilles. • It converts round duct to equivalent rectangular duct. • Provides duct weights per pound, per linear foot. • Register and grille selector provides effective area, face velocity, pressure loss, cfm, throw and terminal velocity.
CAT. NO. DESCRIPTION EACH 4G8341 Air Duct Calculator $6.58
LINER-FINDER™ FLUE SIZING SLIDE CHART
A handy slide rule to help determine the cor- rect size flue liner for Category I gas appli- ances. Works on single and multiple appliance flue liner sizing. Simply select the lateral length, vertical height, and BTU input, match them on the slide chart and the liner diameter is shown on the calculator.