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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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Description
Speedwellstar Heavy-Duty Auto Greenhouse Window Vent Opener - Twin Double Springs Lifts Up to 15kg – Solar Heat Sensitive Automatic Kit15kg Load Capacity Effectively supports greenhouse windows up to 15kg for reliable ventilation Heavy Duty Twin Springs Designed for durability and strength, making it perfect for long term greenhouse use Temperature changes in your greenhouse will trigger the opening device, the working conditions are Start to open 15c 23c (59f 73f) Fully open temperature 35 (19f) or above Fully open distance 45cm (18") Maximum opening weight 15 kg Can be clipped or
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Durable for the aggressive chewer.
Color: 3 PCS
My dogs love this product. One of them is a really aggressive chewer. She will chew on this for over an hour at a time. They are very durable and I don't have to worry about them breaking off large chunks and swallowing them.
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Reviewed in the United States on May 11, 2026
★★★★★ 3
Super durable quality
Color: 3 PCS
Exactly as advertised!
Great quality
Great price
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Happy dog!
Color: 3 PCS
Great product for a Great Dane aggressive chewer!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Good Toy
Color: 3 PCS
This dog toy is incredibly sturdy and holds up well to heavy chewing and rough play. My dog absolutely loves it and can play with it for hours without causing much wear to the toy itself. The only downside is that it’s pretty hard and heavy, so when it gets tossed around indoors, it can easily bang into walls and furniture and leave marks or dents. Great durable toy overall, but probably better suited for outdoor play or open spaces.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
The last forever!
Color: 3 PCS
These are great and last forever. My little guys are super chewers and have had these for months. Great buy!!
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Reviewed in the United States on May 1, 2026