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Charley's Greenhouse
17979 State Route 536
Mt. Vernon, WA 98273
Fax 360-873-8264

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3513 Replacement Cylinder for 3515,3527,3533 (C3513)



For use with 3515 Univent, 3527 Optivent, and
3533 Liberty Louver Solar-Powered vent openers

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3515 Univent Automatic Vent Opener (C3515)
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3533 Liberty Louver Opener (C3533)
This is a Charley's exclusive item, available only from Charley's Greenhouse.
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3527 Optivent Automatic Roof Vent Opener (C3527)
This streamlined, solar-powered, vent opener fits very close to the roof, up out of the way. Starting temperature is easy to ...