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Screw directly into polycarbonate panels, wood, or metal frames. The Standard Vent Opener can open a hinged window or vent weighing as much as 32 lb. For larger panes use the stronger Gigavent with all metal construction, to lift up to 65 lbs.
Note from the manufacturer: It is not necessary to remove the cylinders during the winter. Recommended to lubricate the piston rod yearly, this will help extend the lifetime of the hydraulic cylinder. Don't use solid grease, as dust particles "glues" easily onto the piston rod and can damage the rubber. Also do not forget to unlock the vent in the winter if leaving the vent openers installed. Even a even a weak winter sun can heat the hydraulic cylinder sufficiently to make it start pushing the piston rod outwards.
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