ED1 Bypass Kit - Pre 10/28/00 pool-dimensions_15x30 is printed on heavy-duty aluminum

is printed on heavy-duty aluminum material and is designed to inform patrons that the spa is closed

These signs have a dry erasable surface for changeable messages including the Lifeguard's name

This Astral Horizontal Sand Filter measures 42 x 156 inches

This gives your pool or spa water a clearer and cleaner look

25 pound spring and a non-vented poppet (no poppet disc or hole through the poppet)

ED1 Bypass Kit - Pre 10/28/00 pool-dimensions_15x30 is printed on heavy-duty aluminumThis is a Hayward HAXBPK1931 ByPass Valve Kit for H Series Induced Draft and Millivolt Electronic ED1 Style Pool Heaters. For ED1 heaters, it is for heaters made prior to 10 28 2000.