Forespar MF 840 Vented Loop - 1-1/2" - 903000

Marsoni

M251S

$26.99

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

Forespar MF 840 Vented Loop - 1-1/2" - 903000MF 840 Vented Loop 1 1 2" Installing one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve

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Nice shelves. Install was super easy except on one of the three shelves. The main mounting shelf holes were off so the shelf will not slip onto horizontal mounting poles unless I modify the shelf. So a 20 minute job becomes a two hour job. The mounting system does appear very sturdy just not aligned.

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Reviewed in the United States on January 4, 2026

Verified Purchase

mvb

Los Angeles, US

★★★★★ 5

Simple, easy, and strong

Size: 16 Inch, Color: White

Kind of on the smaller side but for the price it’s just fine. Easy to install with just a screw driver if you can miss a stud, else you’ll need a drill. Strong enough to hold what a normal person would put on a shelf that size. No worries and it looks great

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Reviewed in the United States on April 22, 2026