Hayward Heavy Duty Clamp - Hayward Proseries 21 Sand Filter With 1 5 Valve | SX310N Hayward 525 Sq Ft Swimclear Multi Element Cartridge Filter but be sure not to

but be sure not to overtighten to avoid damaging the threads

it features the best cold crack resistance in the industry

Bottom Approx: 4 1/2"

Add the pool stain preventer formula while filling your pool with water (add it after filling for black plaster surfaces)

Filter Cleaner breaks down organic and inorganic matter with a powerful acidic solution

Hayward Heavy Duty Clamp - Hayward Proseries 21 Sand Filter With 1 5 Valve | SX310N Hayward 525 Sq Ft Swimclear Multi Element Cartridge Filter but be sure not toHayward Heavy Duty Clamp SX310N The Hayward SX310N Heavy Duty Clamp is a durable and reliable accessory designed for use in pool and spa filtration systems. Built to provide secure connections, this heavy duty clamp ensures that filter components stay tightly in place, even under high pressure conditions. It is ideal for use with Hayward filters and other compatible equipment, offering easy installation and long lasting performance. With its sturdy