Natural Chemistry 1L Pool Magic Spring & Fall | 13722NCM Hayward Diatomaceous Earth Filters This filter has 2-1/2" internal

This filter has 2-1/2" internal piping

This kit allows you to switch between fuel types

The cover itself is Blue and atop that sits the swivel assembly which is Gray

This part is Aqua Blue and very easy to install

replace gaskets periodically to ensure continued watertight sealing and optimal pool performance

Natural Chemistry 1L Pool Magic Spring & Fall | 13722NCM Hayward Diatomaceous Earth Filters This filter has 2-1/2" internalNatural Chemistry Pool Magic Spring & Fall 1 L Quick acting enzyme treatment designed for cold water to prevent waterline rings and streamline pool opening and closing. Features SMARTZyme enzyme formula targets non living organic build upeven in low temperatures Prevents scum lines and preserves pool liner and finish integrity Compatible with all sanitizers, filter types, and pool surfaces Reduces need for scrubbing and eliminates acid washing in