Garden shed series palram skylight floor area 567 m width base dimensions 185 cm depth base dimensions 305 cm internal dimensions 170 x 297 cm firsthhe 217 cm eaves height 174 cm wall thickness 1 mm number of rooms 1 room size 57 m material plastic colour grey roof shape saddle apex roof roof thickness 09 mm roof area 559 m roof overhang front 5 cm roof overhang side 5 cm roof overhang rear 5 cm max snowload 75 knm door ty