Two-part design: steel base with polycarbonate roof. Use together or separate 0.5mm thick steel base, with protective weather coating Open-bottom design: contact with soil for better growth Polycarbonate top cover protects plants and holds heat inside Three top windows to allow air inside Assembly required Colour: Dark Grey Material: Polycarbonate Panels, Aluminium Alloy, Galvanised Steel Overall Dimension: 126W x 107D x 57.5/67.5Hcm Base Dimension: 126L x 107W x 29.5Hcm Planting Area Dimension: 124L x 105W x 29.5Hcm Greenhouse Dimension: 120L x 100W x 30/40 Hcm Single Window Dimension: 100W x 60D cm, 50W x 60Dcm Windproof Level: 4 Item Label: 845-780V01CG