Due to the patented "Butt System", it is extremely robust and does not wobble. The post-butting system and shelf board can be changed to flat; Middle shelf: 2.0 inches (50 mm) pitch; Optional floor stopper is available. Patent Registration: No. 3437988; Outer Dimensions: W 35.4 x D 23.6 x H 34.6 inches (900 x 600 x 880 mm); Color: Sakae Green; Weight: 99.3 lbs (46 kg); Casters: 4.9 inches (125 φ rubber cars (2, fixed 2). Assembly required. Assembly required. Please note that we cannot deliver on Sundays and holidays. ● Comes with direct manufacturer shipping, and payment will only be accepted. Please be aware that payment cannot be specified on delivery or time zone. ● Please be aware that delivery to remote islands and Okinawa will be an estimated separately.