Hercules Series 661 Pounds Capacity Black Full Back Stack Chair With Black Frame By Flash Furniture This multi-purpose stack chair fits in a multitude of environments. This chair will make a great conference, reception, meeting, office, and classroom or break room chair. The deeply curved back provides excellent comfort to your lumbar area while also providing airflow. Easily attach multiple chairs together for seminars through the convenient ganging floor glides. No matter what the function this multi-use chair will bring out the best in your event. RUT-438-BK-GG Ergonomic Stack Chair, 661 lb. Static Load Capacity, Black Polypropylene Seat and Back, Curved Back supports lower back, Perforated Back, Supportive Front Cross-Brace, Black Powder Coated Frame Finish, Sled Base, Non-Marring Plastic Floor Glides, Convenient Ganging Floor Clips attach several chairs together