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?     Asked on 6/1/2016by David Banowetz

I am looking for an entire replacement grid assembly for a Nautilus FNS 48. The original part number was 195186 Will this fit? If it does not fit what is your return policy? Thanks David
 Reply

A  Answered on 6/7/2016 by InyoPools Product Specialist Lennox H.

Hi David, This Grid Assy can be used with the Nautilus FNS 48 filter. The product can be returned if it's unused or has not been installed, click link >Return Policy for complete return policy.
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?     Asked on 6/9/2016by Guy

I have a Purex Triton Nautilus FNS 48. Is this the correct grid assy? Thanks
 Reply

A  Answered on 6/9/2016 by InyoPools Product Specialist Joe S.

Hello Guy, yes the 195086 will be the correct Pre-Assembled Drop in Grid Assembly for the FNS 48 Sq. Ft. DE Filter. Also do inspect the body oring as it is best to change it when you change the grids. O-ring, Tank (o-420) PART # 4600-5008 would be the replacement.
 Reply


?     Asked on 5/8/2019by Mike

I have a 1987 FNS 48 with a small pinky size hole in one of the eight filters. Is it time for replacing all the filters (they are 30 years old) or how do I fix the hole? Thx mike
 Reply

A  Answered on 5/8/2019 by InyoPools Product Specialist Hector F.

At that age I would highly recommend replacing all of the grids or even the entire grid assembly. 
 Reply


?     Asked on 6/5/2020by Dave

hi - I see two different part numbers for the Pentair FNS PLUS 48sq ft grid assembly - 195086 & 59023400...What is the difference please?
 Reply

A  Answered on 12/2/2020 by InyoPools Product Specialist Hector F.

Hi Dave, the part number for the grid assembly for the Pentair FNS Plus 48 sq. ft. D.E. filter is 59023400.
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?     Asked on 6/5/2020by Bob

have and older pool would like to replace the grid would this grid assy. work part # I have is 19-5186 thanks
 Reply

A  Answered on 6/5/2020 by InyoPools Product Specialist Patrick P.

Hi Bob, Yes if you have a Nautilus 48 then this is the correct DE grid assembly. If you don't see any reference to your square footage of 48 Sq. Ft. on the filter tank, then measure the grid height and if it measures approximately 24" tall then you have the 48.
 Reply


?     Asked on 5/31/2021by Todd

I have Nautilus FNS 48, I want to replace all the filter grids in system, what is the correct part number for my order?

 Reply

A  Answered on 5/31/2021 by InyoPools Product Specialist Craig C.

Hello Todd.  The Pentair Grid Assy, 48 sq ft - FNS part #195086 is the pre-assembled drop-in replacement.  If you wished to replace the grids individually then a quantity of 7 full size 48 sq ft grids (part #4950-03) and a quantity 1 partial size 48 sq ft grid (part #4950-03A) would be required. It is recommended that the standpipe o-ring be replaced as well, part #4609-2323.  If you wished to replace all O-rings then part #APCK1167 would contain all the necessary parts to complete this project.   Filter, Grid 24" (48 Sq.ft.) (fg-1004)   Filter Grid 24" (48 Sq.ft.) (pg-1904)   O-ring, Generic 2-1/8" ID, 3/32" - 138   Pentair FNS Filter O-ring Kit - APCK1167
 Reply


?     Asked on 5/31/2022by Bill

This is a complete drop-in replacement for Purex Triton Nautilus FNS 48 correct, so I won't need any additional nuts or gaskets?
 Reply

A  Answered on 5/31/2022 by InyoPools Product Specialist Craig C.

Hello Bill.  The Grid Assy., 48sq.ft. - Fns 48 (195086) is the complete grid assembly for the Pentair/Purex Triton Nautilus FNS 48 De Filter.  It is highly recommended that the Stand Pipe O-ring be replaced concurrent with the Grid Assembly  Stand Pipe O-ring.  Replace the Tank O-ring if necessary.  Attached please find the Pentair Nautilus FNS D.E. exploded parts diagram for reference.
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