Speedwellstar Greenhouse 15kg Window Vent Opener 2 Spring Automatic Up To

Automatic Window Opener This opener will automatically open your greenhouse window or vent preventing your greenhouse from overheating Suitable for most greenhouses Uses solar energy - it's FREE to run! Temperature changes in your greenhouse will trigger the opening device, the working conditions are - Start to open - 15°c - 23°c (59f-73f) Fully open temperature 35° (19f) or above Fully open distance 45cm (18") Maximum opening weight 7kg (15lb) Detailed instructions included Simple to fit Can be adjusted to different temperatures Screws for fittings included Things to remember - Do not use this opener anywhere the temperature will exceed 60° (140f) Please ensure your greenhouse window can be opened freely by at least 45cm (18") Get the very best from your greenhouse plants and veggies - don't leave it to chance! This opener will automatically open and close your greenhouse window to controll the temperature inside Suitable for most greenhouses * Uses solar energy - it's FREE to run! Temperature changes in your greenhouse will trigger the opening device, the working conditions are - * Start to open - 15°c - 23°c (59f-73f) * Fully open temperature 35° (19f) or above * Fully open distance 45cm (18") * Maximum opening weight 7kg (15lb) Can be fixed onto aluminium frames, or screwed into the frame * Fitting instructions included * Simple to fit * Can be adjusted to different temperatures Screws for fittings included * Things to remember - Please ensure your greenhouse window can be opened freely by at least 45cm (18")