National Excelsior Company
www.excelsiorhvac.com
All joints must be liquid and pressure tight. Use 3" dia. PVC/CPVC schedule 40 pipe or U/L listed single wall 3" dia.
** Definition of Snow Line: Knowledge of local conditions will reveal the maximum height that repeated snowfalls accumulate to.
The height should be used as the SNOW LINE.
AL29-4C S.S.*. venting materials (See page 7).
Subject to change without notice.
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