HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse
The highest stated wind and snow ratings of the aluminum kits: 70 mph and 30 psf.
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Is the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse any good?
With 6.0 out of 10, it ranks 6 of 26 greenhouses in our comparison. Strength: 70 mph wind rating. Weakness: no warranty term stated. Best for large greenhouses in snowy states.
The highest stated wind (70 mph) and snow (30 psf) ratings among the aluminum kits. Four roof vents for a big space.
What we like
- 70 mph wind rating
- Snow rating: 30 lb per sq ft
- Aluminum frame does not rust
What we don't
- No warranty term stated
Specifications
| Size | 10 x 18 ft (180 sq ft) |
|---|---|
| Height | 101 in |
| Type | Aluminum and polycarbonate |
| Frame | Aluminum frame with reinforcements and triangle braces |
| Panels | Polycarbonate panels, 4 roof vents |
| Wind rating | 70 mph |
| Snow rating | 30 lb per sq ft |
| Weight | ? |
| Warranty | Not stated |
| Amazon rating | 4.1 (164 ratings) |
Source: the product page on Amazon.com, checked 28 Oct 2026. Wind and snow ratings are the maker's own claims.
Score: 6.0 out of 10
Worked out from the specs above. Missing figures score zero.
HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse: common questions
Is the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse any good?
With 6.0 out of 10, it ranks 6 of 26 greenhouses in our comparison. Strength: 70 mph wind rating. Weakness: no warranty term stated. Best for large greenhouses in snowy states.
How big is the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse?
It covers 10 x 18 ft, about 180 sq ft. It stands about 101 inches (8.4 ft) tall at the peak.
Can the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse handle wind and snow?
The listing rates it for 70 mph when anchored. The snow rating is 30 lb per sq ft.
What base does the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse need?
Build it on a level, square base: a concrete slab, pavers, or a timber frame on gravel. Bolt or screw the frame down at every corner. An uneven base twists the frame, and then the panels pop out in the first strong wind.
How long do the panels on the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse last?
It has polycarbonate panels, 4 roof vents. Polycarbonate with a UV coating lasts ten years or more.
What warranty comes with the HOWE 10 x 18 x 8.4 ft Polycarbonate Greenhouse?
We found no written warranty term on the listing. Amazon's return window still applies, so check every part when the boxes arrive.
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