3/8" x 1.5" Fender Washer used on the propulsion system in the swim spas. The 3/8" x 1.5" Fender Washer from Master Spa Parts has a thinner body compared to the flat washer and provides an even wider surface area of support for fasteners.
SpaBoss No Phos is phosphate control for your spa – a naturally formulated additive that helps to remove phosphates from your spa water – keeping it clean and clear! (16 oz. bottle)