by John Krigger
This 8.5×11 durable two-sided sheet covers testing ducts with a pressure pan and finding duct leaks by sight and touch. It describes the typical duct-leakage locations. It is designed as an easy reference for technicians who seal ducts in homes. It also explains how to seal ducts. Illustrations: 4 photos and 9 line drawings. Now available in Spanish, email to order.
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