Hayward Perflex 40 sq. ft. DE Pool Filter (7 lb.) - W3EC75A

The Hayward Perflex Extended-Cycle DE Filter (W3EC75A) is the gold standard for pool owners who demand the absolute clearest water possible. Capable of removing particles as small as 2–5 microns (for comparison, a grain of salt is 100 microns), this filter delivers a "polished" look to your pool water that sand and cartridge filters simply can't match.

Key Features:

• Flex-Tube™ Technology: Our patented design reuses the DE powder over and over by "bumping" the handle, extending the time between cleanings and saving you money on chemicals.
• No Backwashing Required: Unlike traditional filters, the Perflex system cleans without backwashing. This saves hundreds of gallons of treated pool water every season.
• Corrosion-Proof Construction: The tank is injection-molded from high-strength Duralon™, ensuring a leak-free, rust-proof life even in the harshest outdoor environments.
• High-Capacity Performance: With a 40 sq. ft. filtration area and an 80–100 GPM flow rate, this unit is ideal for in-ground pools up to 30,000+ gallons.

Technical Specifications:

• Filter Type: Diatomaceous Earth (DE)
• Filtration Area: 40 sq. ft.
• Flow Rate: 80 GPM (Public) / 100 GPM (Residential)
• DE Capacity: 7 lbs.
• Port Size: 1.5" Female Pipe Thread (FPT)

Why Shop with Al's Cool Pool Store?

Authorized Hayward Online Reseller When you buy from Al's Cool Pool Store, you are purchasing from a certified Hayward partner. This ensures your Perflex W3EC75A is 100% genuine and fully covered by the Hayward manufacturer warranty.

Regional Shipping Excellence Heavy pool equipment shouldn't sit on a cross-country truck for weeks. We use a specialized regional shipping network to get your filter to your door faster and with less risk of transit damage.

Dedicated Expert Support Not sure if DE is right for your pool? Our team of pool professionals is ready to help you with sizing, installation questions, and maintenance tips to keep your water crystal clear.