• Heavy-duty ABS shell with a four bolt, door locking mechanism.• Dual wall filled with cellular concrete.• Wall/Door Thickness: 55/80mm.• Internal Size (W x D x H): 340 x 240 x 190mm.• Electronic panel with LCD screen, accepts thousands of 6-digit codes.• Also supplied with two emergency override keys.• Offers up to one hour fire resistance with UL approval.• Batteries not included.Heavy-duty ABS shell with a four bolt, door locking mechanism. Dual wall filled with cellular concrete. Electronic panel with LCD screen, accepts thousands of 6-digit codes. Also supplied with two emergency override keys. Offers up to one hour fire resistance with UL approval. Batteries not included.• Heavy-duty ABS shell with a four bolt, door locking mechanism. • Dual wall filled with cellular concrete. • Wall/Door Thickness: 55/80mm. • Internal Size (W x D x H): 340 x 240 x 190mm. • Electronic panel with LCD screen, accepts thousands of 6-digit codes. • Also supplied with two emergency override keys. • O