100% galvanised steel with polyester enamel paint finish. Double sliding lockable doors. Base not included. Door opening (H)150, (W)74cm / (H)4ft 11in, (W)2ft 4in. Pitch height (H)10cm / (H)0ft 3in. External size (H)171, (W)183, (D)128cm / (H)5ft 7in, (W)6ft 0in, (D)4ft 2in. Internal size (H)169, (W)168, (D)112cm / (H)5ft 6in, (W)5ft 6in, (D)3ft 8in. Overhang size (W)5, (D)6.5cm. Base not included. Manufacturer's 10 year guarantee against perforation rust. Packed flat for home assembly.