Pentair 23900-1220S Element Filter Assembly - 21in

What This Part Is Used For
Pentair 23900-1220S Element Filter Assembly - 21in is a replacement filter element Assembly for compatible Pentair filtration systems. It measures 21in in length.

Why This Part Matters
A worn filter element reduces debris capture and can increase system pressure. Replacing the Assembly restores proper filtration and circulation balance. Clean, functional elements protect pumps and heaters from debris.

Key Features and Specifications

• Manufacturer part number: 23900-1220S
• Component type: Element filter Assembly
• Length: 21in
• For compatible Pentair filtration systems
• Supports debris capture
• Confirm exact filter model before ordering

Installation and Fitment Guidance
Relieve filter pressure before opening the tank. Inspect O-rings and housing components during replacement. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair manufactures cartridge and DE filtration systems for pools. Their OEM filter assemblies maintain system performance. Pentair replacement parts are widely supported in the service market. The brand maintains strong industry recognition.

Common Service Context
This filter element is commonly replaced during routine filter cleanings. It is often installed when pressure rises despite backwashing or cartridge rinsing.