Swimline Supreme Guard Solid In Ground Winter Pool Cover - 18' x 40' Rectangle system-3-filter-element-assemblies Manufacturer Part # R0318800

Manufacturer Part # R0318800

Reduces chlorine or bromine use by 50% (compared to the minimum ANSI recommended chlorine level of 2

Manufacturer Part # U100093

Above ground base unit treads can be installed curving inwards or outwards

Manufacturer Part # R172213S

Swimline Supreme Guard Solid In Ground Winter Pool Cover - 18' x 40' Rectangle system-3-filter-element-assemblies Manufacturer Part # R0318800Swimline's Supreme Guard winter pool cover helps keeps your water free from dirt, leaves, and debris. It helps prevents algae growth, so you can skip the costly maintenance and avoid time consuming spring cleanups. 10 x 10 Scrim 5 foot overlap Pool Type In Ground Pool Size 18' x 40' Rectangle Cover Size 23' x 45' Rectangle Manufacturer Swimline Warranty 10 Year Manufacturer Pro Rated Warranty 1 Year Full Cover Color Green