Cartridge Filter, Waterway Top Load, 100 sqft, 1-1/2

Cartridge Filter, Waterway Top Load, 100 sqft, 1-1/2"s

Marsoni

M251S

$184.30

Get it in 3 business days with 1 day shipping. Friday, May 29

Cartridge Filter, Waterway Top Load, 100 sqft, 1-1/2"sWaterway Plastics filter model 500 9910 is a 1 1 2"s top load filter. For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while the top is accessed from above the spa. Complete Filter Includes: Niche Lock Ring (secures the body to the niche). Lid Lock Ring (secures the lid). 100 Sq. Ft. Cartridge. Lid w o bromine feeder tube. The diameter of the hole in the niche for this canister is 6 7

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I've basically been exclusively buying these since I've discovered them. Super-comfortable and maintain their shape for a long time, but I've noticed from buying it multiple times that sometimes the pouch area has stiffer texture and more support than other times (when it's loose & stretchy like the rest of it). I wish I could specify receiving the more-supported ones because they tend to produce less....how to say, knocking the boys around.

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Reviewed in the United States on March 22, 2026

Verified Purchase

EclecticJay

Port Orchard, US

★★★★★ 5

Comfort and softness

Size: 3X-Large, Color: Black/Navy/Dark Grey/Red

True to size; they are comfortable, good quality, and really soft.

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Reviewed in the United States on January 3, 2026

Verified Purchase

James

Belleville, US

★★★★★ 5

Look great, feel great

Size: Large, Color: Black

These feel great and fit well. With most briefs I tend to the trouble either keeping the front in or not having the back cover everything but these do both things and are very soft. They also look great, even on body types not in the promo picture. They are a great set of briefs and have held up so far and I got mine a little around a year ago and wear them often.

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Reviewed in the United States on September 26, 2025