ThEComm Series: Economy Commercial Chair: 2 lever Seat and Back Tilt Adjustment. Commercial quality: seat and back foam,gaslift height adjustment, height adjustable back, black moulded base and castors. This chair provides quality seating on an entry level commercial price. The ECom series comes standard with a generous 430mm Deep by 460mm Wide seat and 430mm Wide by 330mm High Medium back for extended general purpose use. Product comes in 4 Standard Colours Charcoal, Black, Red, Green.