Pentair | 170021 | FNS Plus 48 sq ft Tank Lid Assembly – Genuine Replacement Part

The Pentair 170021 FNS Plus 48 sq ft Tank Lid Assembly is a genuine OEM replacement part designed specifically for FNS Plus DE filters. It provides a secure, leak-free seal at the top of the filter tank to maintain proper system pressure and ensure safe, efficient operation.

Key Features

• Genuine OEM tank lid assembly for FNS Plus 48 sq ft DE filters

• Ensures a tight, watertight seal to prevent leaks

• Precision-molded for an exact OEM fit

• Made from durable, chemical- and UV-resistant materials

• Easy installation and removal for maintenance or service

• Helps maintain optimal filtration performance and system safety

Product Overview

The Pentair 170021 FNS Plus 48 sq ft Tank Lid Assembly is engineered to restore the integrity and performance of your DE filtration system. This OEM lid is crafted from heavy-duty, chemical-resistant materials that withstand harsh pool environments and prolonged exposure to sunlight. Its precise fit ensures a reliable seal, maintaining operating pressure and preventing water loss.

Designed for easy installation and removal, the 170021 lid simplifies routine maintenance while extending the life of your filtration system. For pool owners who demand quality and reliability, this genuine replacement part ensures your FNS Plus filter continues to deliver clear, clean water season after season.