Half wall frame with 3mm toughened safety glass, including 1 wide and 1 narrow seed tray shelf. This small greenhouse is designed to fit against a wall or fence. Aluminium structure with 25 year framework guarantee. 3mm Safety Glass. 4' Long - Including 1 wide and 1 narrow seed tray shelf. 3mm Safety Glass. Length 1.21m (4'0"), Height 0.82m (2'8"), Depth 0.63m (2'1"). 6' Long - Including 2 wide and 2 narrow seed tray shelves. Length: 6'0" (1.83m) Height: 2'8" (0.82m) Depth: 2'1" (0.63m).