Pentair PacFab Nautilus NS48 and NSP48 Complete 48 Sq Ft DE Filter Element Grid Assembly -0192326



Part # 192326

By Pentair Pool Products

  5 Average  



Part # 192326

Dimensions 28" X 15"

Alternate Part #'s 192326, 4600-65B, PAC0512939, _192326, PAC-051-2939, PEN192326

Product Description

This is the complete DE grid assembly used on the follwing Pentair, Purex, Pac-Fab and American Products 48 Sq. Ft DE filters.

  • Nautilus Plus NSP-48 Filter
  • Nautilus NS48 Filter

The DE grids on the 48 Sq. Ft. filters measure 24" in length. This is the complete pre-assembled grid assembly which includes 8 DE grids, top manifild, bottom manifold, air relief strainer, extension and tie rod.


?     Asked on 8/4/2021by Ray

ns48 I have an old Pac-Fab NS48 DE filter. My old assembly does not have the air vent tube shown in the newer manifold. I did not notice the screen there either. I saw some Amazon reviews claiming this part 192326 lacks the part 172855 (vent screen). Can you confirm that this is the correct replacement part for me and I do not need to order anything seprately?


A  Answered on 8/5/2021 by InyoPools Product Specialist Craig C.

Hello Ray.  The Pentair Products Grid Assembly NS48 48 sq ft, 192326, is the complete pre-assembled grid assembly which includes 8 DE grids, top manifold, bottom manifold, air relief strainer, extension and tie rod.  

?     Asked on 7/9/2021by MICHAEL J O'HARE

I have an older Natilus FNS 48. It is a fiberglass tank. I need a new complete filter grid assembly with upper and lower manifolds. Do you stock the complete unit? How long would it take to ship to Anaheim, CA? Thanks, Mike

A  Answered on 7/9/2021 by InyoPools Product Specialist Stephen B.

Thank you for Contacting Inyo Pools, Grid Assy., 48 Sq.ft. Filter - 59023400 is the filter pack that you need.

?     Asked on 8/20/2020by MICHAEL DOLAN

Is this a replacement for Nautilus / Pac Fab NSS-48


A  Answered on 8/20/2020 by InyoPools Product Specialist Lennox H.

Hi, Michael. Yes, this Grid Assembly - 192326 is the correct replacement. 

?     Asked on 6/9/2020by Jimmy

I need to replace all of the filter screens inside my Pentair NSP48 filter. Are these the proper replacement parts?

A  Answered on 6/9/2020 by InyoPools Product Specialist Lennox H.

Hi, Jimmy. This Grid Assembly - 192326 is the correct replacement or you can purchase the Grids only which is P/N FG1004PACK.

?     Asked on 3/5/2020by Tom

Is this product a replacement for a KDI American Grid Assembly model # 584090 (000)? 48 Sq Ft


A  Answered on 3/5/2020 by InyoPools Product Specialist Lennox H.

Hi, Tom. Unfortunately, it is NOT. You would need P/N 59002500.

  • Commented on 3/6/2020 by Product Owner

    Hi. Thanks for setting me straight. Just need some clarification about Grid Assy., 48 sqft. Titan - 59002500. Dimensions indicated in product photo (17" x 28") differ from Dimensions in Description (17.5" x 29.5"). Does the difference have something to do with the dimensions of the manifold? Thanks

A  Answered on 3/10/2020 by Product Owner

Yes. The 5900250 it is a replacement for KDI American Grid Assembly #584090 48 sq. ft. with stainless steel tank.

?     Asked on 9/5/2019by Justin

I’d like to verify before purchasing that this will be a direct replacement for the assembly in my 48 sq ft American Titan D.E. Filter from circa 1986. Product #584090. I’d also be looking for the O-ring that is part of the connection from this assembly to the tanks standpipe. Thank you.

A  Answered on 9/5/2019 by InyoPools Product Specialist Lennox H.

Hi, Justin. The correct replacement assembly is P/N 59002500 - Grid Assy., 48 sqft Titan and P/N 4657-26 - Standpipe O-ring. 

?     Asked on 7/13/2019by Inyo Visitor

Nautilus FNS48 (PACFAB) was installed March 1995, only items replaced to date are some individual filters. Recently DE ejected from spa jets. Pool company technician found no leaks in filters or elsewhere. Suggestions? Thinking about replacing the entire grid assembly with the NS48 assuming that will fit, but I want to ensure it will also resolve the problem. Thanks!

A  Answered on 7/17/2019 by Industry Professional

The grids may have some tears. Did the technician check them? And yes these would be the correct units to replace if needed yours.

?     Asked on 6/14/2019by Edward Lauduskie

I have a Sylvan Pool DE Filter, 48 sq. ft. Model 583090. The other information on the filter states: KDI American, Mfg by American Products, No. Hollywood, Ca and Orlando, Fl. Will this filter be interchangeable with my system?

A  Answered on 6/14/2019 by InyoPools Product Specialist Lennox H.

Hi, Edward. This grid assembly will not fit your model filter, you will need the Grid Assembly 48 sqft - 59002500

?     Asked on 6/4/2019by Joseph Scarantino

Will this assembly fit a Nautilus Stainless Steel Ns-48 filter?

A  Answered on 6/4/2019 by InyoPools Product Specialist Patrick P.

Hi Joseph, yes this DE Grid assembly does fit a Nautilus Stainless Steel Ns-48 filter.

?     Asked on 5/29/2019by Shane

Hi I have a Crystal Water 48sq ft filter would this be the correct replacement filter grids I would need?

A  Answered on 10/4/2019 by Industry Professional

Yes, it is the correct complete grid assy.

?     Asked on 5/6/2019by Tony

Hi, I have a Pentair FNS48 Filter that is approximately 15 years old. The grids all appear to be holding up fine but are not holding DE - it's coming back into the pool. Pic attached showing filter prior to back-washing with many grids with little to no DE attached. Is there a life expectancy to the grid material? I don't see any cracks in the manifold or pipe etc. Any suggestion on what may be causing this? Thank you


A  Answered on 5/6/2019 by InyoPools Product Specialist Patrick P.

Hi Tony, we normally see that DE grids will last about 5 years so if you still have the original grids then it would definitely time for a new set of grids.

?     Asked on 1/26/2016by Tim

Which pipe assembly (part # 13 on the parts diagram) is required for the part# 192326 Grid Assembly - Ns48 48 Sq Ft for Pac-Fab Nautilus Stainless D.E filter?

A  Answered on 1/28/2016 by InyoPools Product Specialist Lennox H.

Hi Tim, You would need the Piping Assembly, Upper Sh400 (194983), unfortunately this part is no longer available and there is not replacement.

?     Asked on 1/25/2016by Tim

I have a pac fab nautilus nss-48 stainless de filter. Is this the correct grid assembly? Does it come with a new down tube and new down tube o-ring?

A  Answered on 1/26/2016 by InyoPools Product Specialist Megan C.

Hello, Tim. Yes, it is the correct grid assembly.  The part# 192326 Grid Assembly - Ns48 48 Sq Ft  for Pac-Fab Nautilus Stainless D.E includes 8 DE grids (key#10x7 and key#9x1), bottom manifold/retainer grid (key#28),top manifold (key#7), air relief strainer (key#34), extension and tie rod (key15). Please refer to the parts diagram on page or click here.


Est. Repair Time

Less than 1 hr

Tools Needed

Socket Set

3     0

My Stainless steel DE filter looked brand new on the outside but the filter and assembly was falling apart

Written on 6/27/2017 by Guest

My step by step instructions are as easy as can be . We took out the old filters and manifold and dropped in the replacement from inyopools. It fit like a glove. I couldn't be happier. Thank you inyopools

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