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Laminated Pressure Relief Formulas for Central Returns
Laminated Pressure Relief Formula Sheet
Laminated airflow reference formula sheet

Heavy duty laminated reference sheet with airflow formulas
Price: $6.00

Availability:: Usually Ships in 24 Hours
Product Code: HEY-FORM2

Description Technical Specs Extended Information
A laminated sheet with provides pressure relief solutions for homes that have central returns.  This item ships via USPS First Class Mail for the fixed rate of $3.00.  Please provide a ship to address that is recognized by the USPS.  If you need to change this method, just call 866-389-8578 to place your order!
Product Details
How big should a jumper duct be?  How much should a bedroom door be undercut?  This sheet provides all the formulas you need to meet the code pressures.

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