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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
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🌎The durable resin frame is weatherproof and features simplified assembly with the pin & lock system
Smart-Lock connectors make installation quick and easy
4Dimensions (in): 40 L x 73 W x H 85
Royal Victorian Automatic Opener for Roof Window and Side Push Out Window Hobby Greenhouse Contact our expert customer serviceFor Royal or Junior Victorian Greenhouses: the black tube is filled with special paraffin oil which expands when the temperature reached around 72 and the piston will push the window open up to about 14". When temperature falls a heavy spring pulls the window closed. No electricity needed! May also be used on side push out windows. Specifications: Fully automatic no electricity needed! Opens to approx 14" Black color