Automatic Opener for Louvre Window for Royal or Junior Victorian Greenhouses: the black tube is filled with special parafine oil - which expands when the temperature reached around 72o 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!
Specs
Specifications:
Fully automatic - no electricity needed!
Opens to approx 14"
Black color
WASHING INSTRUCTIONS:
Machine wash separately in cold water on a gentle cycle. Tumble dry separately on low heat. Add QE Home Wool Dryer
Balls to reduce wrinkles and increases drying efficiency. Touch up with a low heat iron as needed. Do not bleach or dry clean.
Size Chart
Reviews
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