Waterway 550-4350 D.E. grid support assembly with 32 inch PVC shaft, 60 sq. ft.Waterway D.E. Grid Support Assembly with 32 in. PVC Shaft, 60 sq. ft., 550-4350 In stock$8199
Waterway 550-4350 D.E. grid support assembly with 32 inch PVC shaft, 60 sq. ft.
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Waterway D.E. Grid Support Assembly with 32 in. PVC Shaft, 60 sq. ft., 550-4350

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$8199
In stock
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Quick overview

  • Genuine Waterway Factory part number 550-4350.
  • 60 sq. ft. filters Listed for the 60 square foot D.E. filter size.
  • 32 in. PVC shaft The shaft length that sets the grid stack in the tank.
  • Holds the grid set square The support assembly is what keeps the grids spaced and aligned so D.E. coats them evenly.
  • A cracked support wrecks grids Once the support fails, grids lean, rub and tear, and D.E. blows straight back to the pool.
  • Check it at every teardown The support is easy to inspect while the grid set is out for a deep clean.
Full description and specifications ↓

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Product details

The Waterway 550-4350 is the D.E. grid support assembly for 60 square foot diatomaceous earth filters, supplied with a 32 in. PVC shaft. It is the genuine Waterway part.

The job it does

A D.E. filter is a stack of grids held in a frame inside the tank. The support assembly is that frame. It sets the spacing between grids and keeps the whole stack square, which is what allows the D.E. charge to coat every element evenly. When the water is doing the work, that geometry is the whole design.

What failure looks like

When a support cracks or distorts, grids start to lean and touch. They then rub against each other under flow and wear through at the contact point, and once a grid is holed the D.E. goes straight back to the pool as a fine grey cloud. Owners tend to replace the grid first and find the problem returns, because the support that damaged it is still in the tank.

Before you order

Check the filter square footage and measure the shaft on the assembly you are taking out. This one is listed for a 60 sq. ft. filter with a 32 in. shaft. The grids themselves are separate parts and are not included here.

Specifications
Brand Waterway
Manufacturer part number 550-4350
UPC 806105210746
Type D.E. grid support assembly
Filter size 60 sq. ft.
Shaft length 32 in.
Shaft material PVC
Shipping weight 17.25 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which filter is this for?
A 60 square foot D.E. filter. The assembly carries a 32 in. PVC shaft, which is the dimension to check against the one you are removing.
What does the grid support do?
It holds the D.E. grid set in position inside the tank, spacing the grids and keeping them square so diatomaceous earth coats them evenly and water passes through the whole element rather than a favored path.
How do I know mine has failed?
Grids that lean, rub against each other or show wear at the same spot, D.E. returning to the pool after a coat, or a visibly cracked support when the tank is opened.
Does this include the grids?
No. This listing is the grid support assembly with its shaft. The grids themselves are separate parts.
Ask your own question