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Home Pool Pool & Spa Filters Hayward Pool & Spa Filters Hayward D.E. ProGrid Pool Filter | 36 sq. ft. | Requires Backwash Valve - Not Included | W3DE3620
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. Most vendors are not providing any ETA on when items will be available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Hayward D.E. ProGrid Pool Filter | 36 sq. ft. | Requires Backwash Valve - Not Included | W3DE3620

Hayward D.E. ProGrid Pool Filter | 36 sq. ft. | Requires Backwash Valve - Not Included | W3DE3620 Hayward D.E. ProGrid Pool Filter | 36 sq. ft. | Requires Backwash Valve - Not Included | W3DE3620 Hayward D.E. ProGrid Pool Filter | 36 sq. ft. | Requires Backwash Valve - Not Included | W3DE3620

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  • Requires backwash valve, sold separately. See Related Items.
  • Reinforced thermoplastic filter tanks constructed from durable glass reinforced copolymer to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems
  • Heavy-duty, tamper-proof one-piece flange clamp securely fastens tank top and bottom, allowing for quick access to all internal components without disturbing piping or connections
  • Online part number W3DE3620 is the direct replacement for part number DE3620.
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Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced thermoplastic, Pro-Grid combines high-technology features and "service-ease" design for an unparalleled filtration value for both new pool and aftermarket installations.
In addition, Pro-Grid delivers low maintenance and dependable operation.
*Self-Aligned tank top and bottom make access to servicing the grid elements fast and simple.
*High impact grid elements designed for up-flow filtration and top-down backwashing for maximum efficiency.
*72 ft filter made of reinforced thermoplastic allows for both commercial and large residential applications and years of non-corrosive, trouble-free performance.
*New High capacity, rapid release manual air relief valve bleeds air with a quick quarter turn of the lever.
*Inlet diffuser elbow distributes flow of unfiltered water evenly to all filter elements and provides even distribution of D.E. to grids
Product Specifications
Brand Hayward
Item D.E. Filter
Type Vertical Grid
Series ProGrid
Filtration Area 36 sq ft
Flow Rate 72 gpm
Maximum Working Pressure 50 psi
HP 0.5 - 3
Turnover 34560 gal at 8 hrs, 43200 gal at 10 hrs
Media Required 4.5 lbs
Filter Tank Injection-Molded
Filter Element Monofilament Polypropylene cover fitted over 8 curved, high-impact grids

Square Foot
Grid Type
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 7 questions Browse 7 questions and 5 answers
why does a clean and charged filter rise in pressure after running only 4 hours.. from 12 lbs to 28 lbs ?
A shopper on Jul 24, 2019
BEST ANSWER: Because the algae that collects on the filter elements and de restrict the flow of water
i have a 20 x40 inground what size filter is needed ? if this filter is right for my pool what is the size from the floor to the pipe opening ?
A shopper on Jun 4, 2016
BEST ANSWER: I would recommend at least a 48cu ft. For that size. My pool is 28 x 15 and the 36cu ft is barely enough. Take into account the amount of local dust and pollen you have in your neighborhood. I live in a very dusty area so the filter gets dirty faster.
How do you care for this system?
Laura M on May 17, 2016
BEST ANSWER: Really all you have to do is clean the grids 2-5 times a year. Best to remove the grids from the system and wash them off. Back washing is also a quick way to just flush the system, but it is not the recommended way to clean the system.
how do you know what size DE filter system to buy?
A shopper on Apr 18, 2016
BEST ANSWER: I battled the same question when I bought my filter. I live in a dusty area and my pool is only about 9000 gallons. The 36sq ft is borderline to small. If you live in a low or normal dust area I would say the 36sqft filter would be sufficient up to 10,000 gallons but remember that it's a small cost to upgrade to a larger filter and larger means less time cleaning them. Go big and you will be happy.
Is it necessary to purchase the back value or can it be installed without one?
A shopper on Aug 30, 2019
BEST ANSWER: It can be installed without a backwash valve but you would need to buy unions instead.
Hayward Cartridge Filter Plumbing Kit | DE2400PAK2CS
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need item 3w3d2420 pro grid ?
A shopper on Aug 30, 2021
Will my very flow valve from a previous de 3600 filter fit this and does this come with the the grids for the de?
A shopper on Aug 13, 2021
5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Perfect replacement
Does a great job filtering algae and fine particles which leaves the water very clear. This unit has user settable lines on the pressure valve to indicate the pressure level when the unit is clean and the higher level you should look for as a sign the unit needs to be back-flushed, that was a nice touch. Fits right in where my old filter was mounted.
May 7, 2017
Rated 5 out of 5
Easy as pie
My order was easy to place, was filled and received in a timely manner.
June 23, 2017
over 4 years ago
Warranty applies only to products that were purchased from Hayward authorized sellers. Pool Supply Unlimited is a Hayward Authorized Online Reseller.
See Warranty Information PDF for warranty details.
For Hayward warranty registration information, and to submit online, please visit www.hayward-pool.com
This information was updated on 4/22/2022. For the most current information and full warranty policy please visit www.hayward-pool.com

 Adobe Acrobat PDF Warranty Information
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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