RION Automatic Roof Vent Opener

Dimensions:10.25"L x 3.5"W x 1.75"H

By Rion

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$105.85 In Stock

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Description & Features+

You don’t have to worry about your greenhouse temperature or plants to wilt or damage, from extra heat or cold. You don’t have to worry for opening and closing the greenhouse vent, the Automatic roof vent opener just makes gardening easier. Automatically opens and closes the roof vent window when temperature changes. The opener has a metal cylinder containing special material which expands when heated. This pushes a piston that opens the window. As the temperature cools, the material shrinks and a spring closes the vent and resets the piston. The opening and closing of the window is gradual allowing just the right amount of air flow for cooling. All you need to do is to install it on your roof vent window and it automatically starts working. Works with ALL RION greenhouse models only.

  • Easy to install
  • Only works with ALL RION greenhouse models
  • Automatically opens and closes the roof vent window

Assembled product dimensions: L 10.25 inches x W 3.50 inches x H 1.75 inches x W 1.00 pounds


Available for Shipping to Canada Post
Assembled Height
1.75 in
Assembled Length
10.25 in
Assembled Weight
1 lb
Assembled Width
3.5 in
Product Identifiers
Walmart Item #
Model #

Return Policy+

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You can return this item within 90 days from the day you receive your online order.

There are two easy ways to return this item:

  • Return this item to a Walmart store
  • Return this item by mail

From the Manufacturer +

Ratings & Reviews+

RION Automatic Roof Vent Opener is rated 4.0 out of 5 by 1.
Rated 4 out of 5 by from Rion Window Opener Purchased as a replacement part for a 12 year old Rion Prestige greenhouse. This opener is slightly different from the original part but not an exact fit. Metal edges are a little sharp so wear gloves when installing. The piece connecting to the window does not line up well. I was only able to install 1 screw to attach it. We'll see how it does in the high winds during the spring months.
Date published: 2016-11-13
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