Stacking is easy with OFM's 320P Stack Chair with Plastic Seat & Back.Molded plastic seat and back keep users comfortable.The 3/8" solid wire steel sled base offers durable stability.Builtin ganging brackets keep your rows in order.When your event is over, the chairs stack up to 8 high alone, or up to 20 on the optional dolly.No assembly required.Weight capacity up to 300 lbs.