Perfect Cover M Length: 6250mm, Width: 3500mm Inside width: 3218mm, Height: 1035mm Track width: 141mm, No. of modules: 3 Shipped: preassembled Perfect Cover L Length: 8330mm, Width: 4500mm Inside width: 4108mm, Height: 1300mm Track width: 196mm, No. of modules: 4 Shipped: preassembled Perfect Cover XL Length: 10400mm, Width: 5500mm Inside width: 4998mm, Height: 1572mm Track width: 251mm, No. of modules: 5 Shipped: preassembled