Product Overview

The Pentair FullFloXF F72 (188621) is a high-efficiency, grid-style diatomaceous earth (D.E.) pool filter with 72 sq. ft. of filter area in a 21.5-inch fiberglass tank. Its enhanced internal design and balanced flow deliver up to 25% greater energy efficiency, superior removal of even the tiniest particles, and longer runs between cleanings. Rated for up to 144 GPM, it suits large, feature-rich in-ground pools.

⚠️ Important Purchase Notice

This filter should be installed by a qualified pool professional in line with local codes and Pentair's installation guide. Allow 92 inches of vertical clearance to remove the lid and internal elements. Please inspect your shipment on arrival and report any shipping damage promptly.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Ideal For

• Large and premium residential in-ground pools
• Pools with water features and high flow demands
• Owners who want the finest filtration available
• Systems plumbed in 2.5 or 3 inch

Key Features

• 72 sq. ft. grid-style D.E. filter
• FullFloXF enhanced internal design with balanced flow
• Maximum flow rate of 144 GPM
• 2.5-3 inch plumbing connections
• 21.5-inch beige fiberglass tank
• Requires 7.2 lbs of D.E.

Benefits

• D.E. filtration removes even the tiniest particles for crystal-clear water
• Up to 25% greater energy efficiency and lower operating cost
• Longer filtration cycles extend the time between cleanings
• Low-maintenance ownership

Compatibility

The F72 is designed for residential pools with flow up to 144 GPM and 2.5 or 3 inch plumbing. It does not include a backwash valve; the FV72 (188625) is the version with a built-in backwash valve and 2-inch plumbing. Before ordering, confirm your pump flow rate, plumbing size, valve setup and available vertical clearance, and confirm the part number 188621 matches your needs.

Installation or Upgrade Context

The FullFloXF F72 is a common choice for new construction and for upgrading an older or undersized filter on a large pool. At its 144 GPM maximum it can turn over roughly 69,120 gallons in 8 hours, 86,400 gallons in 10 hours or 103,680 gallons in 12 hours. Charge the filter with 7.2 lbs of D.E. after installation and after each backwash.

What’s Included

• Pentair FullFloXF F72 72 sq. ft. D.E. filter (188621)

Specifications

Warranty

This filter is covered by Pentair's 2-year warranty, subject to Pentair's terms and conditions, including professional installation where required. Pool Supply Depot can provide proof of purchase for warranty claims.

Customer Q&A

What is the difference between 188621 and 188625?

The 188621 is the F72 with 2.5-3 inch plumbing. The 188625 is the FV72, which has a built-in backwash valve and 2-inch plumbing.

What is the maximum flow rate?

Up to 144 gallons per minute.

How much D.E. does it need?

7.2 lbs of D.E.

How much clearance does it need?

Allow 92 inches of vertical clearance to remove the lid and internal elements.

What is the warranty?

Pentair covers it for 2 years, subject to its terms and conditions.

How much does it weigh?

Approximately 105 lbs shipping weight.