Greenhouse Sidewall Ventilation Crank

Marsoni

M251S

$1260.00

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

Greenhouse Sidewall Ventilation CrankVentilate your greenhouse with our side wall ventilation hand crank. Easily vent your roll up curtain sidewalls up to 150 feet long! Features Stainless steel handle, full plastic resin casing for long anti corrosion time The 4: 1 Gear ratio provides easy cranking Self Locking and automatic brake holds sidewall in place The drive shaft fits perfectly inside " EMT conduit. Attachment screws included " EMT conduit guide post not included but easily found

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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We purchased this as a gift for our 2 grand dogs who are given dog food with slow feeders. One a lab and the other a blue healer. The lab gets so excited trying to get ALL the treats or food, it’s so funny. The healer does a pretty good job too, but is a little slower. I think it’s a great activity for dogs.

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Reviewed in the United States on December 18, 2023

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Natrona Heights, US

★★★★★ 5

chew proof!

got my lab pit mix one of these for christmas for the past 2 years. it lasted the entire year and he is a heavy chewer. just get him a fresh one for the holidays but it would have lasted longer!! not squeaky :)

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Reviewed in the United States on April 7, 2026

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Mr. Wordy

Boise, US

★★★★★ 5

It's tough!

This chew toy has held up well. Yes, the squeaker did succumb eventually. Yes, my dog was able to eventually chew pieces from it. However, it has lasted longer than any other chew toy we have purchased other than the Nylabone type. I even bought several for family members who have dogs.

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Reviewed in the United States on August 26, 2025

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Storm X

Birmingham, US

★★★★★ 4

A bit heavy, so mind the sizing. Good though.

My dog is a relentless chewing Jock. He's 11 lbs of Chi X and runs and chews until he's exhausted. I got the 6" for him and it's a bit heavy. He already unraveled and ate the string tape, so I braided and knotted it. He likes it when I can get him to chase it. I'd get a 4" if I were to do it again. It's a great well made product that really let's him get a good chew on.

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Reviewed in the United States on May 22, 2026