Pentair 170021 Lid Assembly 48 Sq Ft FNS Plus – Pro Grad.E. Fns Plus 48 D E Filter

Pentair 170021 Tank Lid Assembly for FNS Plus 48 Sq Ft DE Filter

Genuine Pentair 170021 tank lid assembly for FNS Plus 48 Sq Ft DE filters. Durable, corrosion-resistant construction ensures long-lasting performance.

Features

• Genuine Pentair replacement part (170021)
• Compatible with FNS Plus 48 Sq Ft DE filters
• Constructed from fiberglass-reinforced polypropylene
• Resistant to pool chemicals and UV degradation
• Includes high-flow manual air relief valve
• Designed for residential pool and spa applications
• Easy to install and maintain

Description

The Pentair 170021 Tank Lid Assembly is a direct replacement for the FNS Plus 48 Sq Ft DE filter. Constructed from fiberglass-reinforced polypropylene, it offers superior strength and resistance to pool chemicals and UV degradation. This assembly includes a high-flow manual air relief valve, facilitating a straightforward installation process. Designed for residential pool and spa systems, it helps maintain optimal filtration efficiency and system integrity.

Pro Tip

When replacing the tank lid assembly, ensure the air relief valve is properly installed to prevent air buildup, which can affect filtration performance.

Installation Tips

Ensure the filter is completely depressurized before beginning installation. Verify compatibility with your specific filter model to prevent installation issues.