Expand your gardening horizons with the Alton Westminster Cedar Greenhouse – a structure that offers both the extra space and timeless beauty needed to create a truly remarkable garden retreat.
With an impressive 11ft width and height, the Westminster creates a grand, open interior perfect for those looking to maximize their growing potential while enjoying the serenity of their outdoor space. This premium greenhouse is designed to deliver the best in both form and function, ensuring years of satisfaction. The Alton Westminster Greenhouse stands out with its wider and taller profile, giving it a stately presence in any garden. The combination of half-paneled wood and expansive glass exudes timeless appeal, blending seamlessly with nature while offering plenty of light and room for growth. The steep roof pitch is not only visually striking but also practical – allowing snow to slide off easily, making it an excellent choice for gardeners in colder climates. The spacious interior and ample headroom make this greenhouse perfect for both cultivation and relaxation, providing an inviting space to immerse yourself in your garden.
Choose Your Size:
16'8" (179 sq. ft.): 10'9" wide, 11'1" peak height — our most compact Westminster, with 4 automatic roof vents.
18' (202 sq. ft.): Same peak height, stepping up to 5 automatic roof vents.
20'10" (224 sq. ft.): Our largest Westminster, with 6 automatic roof vents for maximum airflow.
Talk to a Greenhouse Specialist: We're a greenhouse specialist, not a general retailer — call or text us at 732-806-7959 and you'll talk to someone who actually knows this product inside and out. We'll help you figure out exactly which size fits your space, and get you a straightforward price.
Accessories
Comes Standard With
- 3mm safety glass with screw in cedar capping
- Wide single door with lock and low threshhold
- Victorian style aluminum guttering with downspout
- Automatic opening roof vents
16'8"(4)
18'(5)
20'10"(6)
- Louvre windows
16'8"(3)
18'(4)
20'10"(4)
Optional Acessories
- Aluminum bar capping
- 2 slat shelf staging
- 4 slat shelf staging
- Victorian cresting
About Alton by Exaco
The Westminster is built by Alton UK, a British cedar greenhouse maker in continuous production since 1921, imported exclusively to the U.S. by Exaco Trading — World of Greenhouses is an authorized Alton dealer. Every Alton greenhouse shares the same build quality: grade-1 Western Red Cedar (no knots) dipped to resist water absorption, a steep 45° roof pitch so snow slides off, tongue-and-groove assembly with solid aluminum gussets at every joint, an aluminum base profile that lifts the frame 1" off the ground, aluminum bar capping over the glazing, 3mm tempered safety glass, pre-assembled doors and windows, and automatic enrollment in a 10-year warranty.
Size Options
-
16'8": 10'9" wide, 11'1" peak height — 179 sq. ft.
-
18': 10'9" wide, 11'1" peak height — 202 sq. ft.
-
20'10": 10'9" wide, 11'1" peak height — 224 sq. ft.
