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12' x 11' Greenhouse 177
Dimension A = 1884mm
Dimension B = 1884mm
Dimension C = 1884mm
Dimension D = 1884mm
Dimension E = 1884mm
Dimension F = 1884mm
Diameter at the widest point from corner to corner = 3768mm
Diameter at the narrowest point from wall to wall = 3285mm
Width (side to side) x depth (front to back) = 3768mm x 3285mm
We recommend that your base should be no smaller than the floor size of the new greenhouse and no more than a few inches larger.