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    Brown Technical Books

    Duct Slide Calculation Slide Rule

    Duct Slide Calculation Slide Rule

    $62.44
    $62.44
    Sale Sold out

    American Conditioning Contractors of America Auxiliary Calculations Duct Calculator. This durable two-sided plastic sizing wheel comes with a complete instruction manual for residential and commercial duct-sizing procedures. Designed by Hank Rutkowski.

    Uses:

    • Sizes metal ducts, lined metal ducts, duct board airways, and wire helix flexible ducts
    • Converts round shapes to equivalent rectangular shapes
    • Correlates available pressure with total effective length and friction rate (Manual D sizing calculations)
    • Converts velocity into velocity pressure and vice versa
    • Corrects for altitude and temperature
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