H500FD Top Flue Cover - Taupe gallons-per-day_50-74 This plastic depth marker tile

This plastic depth marker tile states 1 1/2 FT

This is a Taylor Technologies Watergram Circular Water Balance Calculator (Slide Rule)

and is designed to prevent swimming in water with high chemical levels that may result in illness

featuring sturdy wheels and a compact frame that allow it to be moved easily between pool locations or stored away when not in use

The water temperature should be above 60 degrees F

H500FD Top Flue Cover - Taupe gallons-per-day_50-74 This plastic depth marker tileThis is a Hayward FDXLTFC1500 Top Flue Cover in Taupe for H500FD Universal H Series Low NOx Pool Heaters. The Top Jacket is sold separately.