This is a full 25 lb box of 28" Ceiling Grid tie-wire. Many ceiling projects can be done with just one box. This Tie Wire is galvanized for corrosion resistance and is available in pre-cut 28" lengths for quick installation. It is recommended to purchase 16 wires (minimum) per 100 square feet of installed ceiling grid on residential project. 24 wires per 100 sq ft for commercial. Save money by purchasing a bulk box of tie-wire today.