Clarathon FC-0121 Spa Filter PTL18P4-4 4CH-21
One and seven eights inch threads
Thread profile fine MPT
Clarathon FC-0121 Spa Filter PTL18P4-4 4CH-21
One and seven eights inch threads
Thread profile fine MPT

Clarathon FC-0121 Spa Filter PTL18P4-4 4CH-21

FC0121
Save $-16.95
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$6.95
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Power Soak Filter Cleaner
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Clarathon® Premium Ultra Hot Tub Filters provide unmatched performance at a great price.

Type: Threaded fitting in filter cap. Screw-In

Diameter:Measured across end cap at widest point.4⅝"

Length:Measured end cap to end cap, excluding any handles, threads, fittings or protrusions. 8"

Top: Handle

Thread:Measured outside diameter. Also called 1½" MPT. 1⅞" Fine

Media:Media area & weight/yard.18 SF-3oz

Cross reference: Unicel 4CH-21 | Pleatco PTL18P4-4 | Filbur FC-0121 | R173372, XLS437, 11901, 20245-238, 40191

Product notes: Always keep spare clean, dry cartridges on hand.
Used in: Atera | California Cooperage | Champion | Galaxy | Saratoga Spas | Vita | and others


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This spa filter receives overwhelmingly positive feedback. Customers said it's a "perfect match" and "great filters" for hot tubs. Praised for quality, value, and easy cleaning. One shopper noted ordering issues with different billing/shipping addresses. Described as doing its job effectively at a competitive price point with quick delivery.

  • 5 stars: 11 (92%)
  • 4 stars: 1 (8%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Rottenron
Perfect

Perfect match, no issues at all b

R
Rob P.
great filters

I use it to enjoy life to the fullest and just LOVE the HOT TUB

B
Barbara p.
I buy this item every year for the hot tub...

Very satisfied with this product and reasonably priced.

G
Great
Forever customer

Perfect customer service. Great filters

s
snook
I would buy this product again

It was delivered and fir as promised and was a great value.

W
William H.C.
I have used this product before and really like it.

I tried to order online, but because the billing address and shipping address were different, the site wouldn't let me order. So I had to make a phone call. So that took longer. That is the only issue I have is the ordering process.

J
John Q.
Great Product for the price

Quality filters at a great price..... Install them in my spa.. Will be and have place another order of other products from Spa Depot.......

s
sandy
purchase

It was my fault that I didn't read the size of the filter but you have been so great in the return that I have sent back to you.

J
John C.
Good filter for the price.

The filter does it's job cleaning the spa water. It is also easy to clean.

M
Missy
Does the job.

Thanks!

L
LANE J.
I would buy this product again.

Exactly what I ordered and came quickly to the house. Thank you.

T
T.O.
Good

Good product, good price, quick delivery👍🏽

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