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Minimum base sizes
8ft wide base sizes

We recommend that your base should be no smaller than the minimum base size listed below and no more than a few inches larger.
The first dimension listed is the external width (A) and the second dimension is the external length (B). The width refers to the angled gable wall.
8'5" x 10'4" GREENHOUSE = minimum base size 2662mm wide x 3242mm long (8'9" x 10'8")
8'5" x 12'9" GREENHOUSE = minimum base size 2662mm wide x 3986mm long (8'9" x 13'1")
8'5" x 15'2" GREENHOUSE = minimum base size 2662mm wide x 4730mm long (8'9" x 15'6")
8'5" x 17'8" GREENHOUSE = minimum base size 2662mm wide x 5474mm long (8'9" x 18'0")
8'5" x 20'1" GREENHOUSE = minimum base size 2662mm wide x 6218mm long (8'9" x 20'5")