Two per pack, the Utilitech A19 Halogen 72W light bulbs use 72 watts and produces 1,490 lumens; these bulbs are an excellent replacement for a 100-watt incandescent. These A19 halogen bulbs have an average life of 1,000 hours. It has a light appearance of 3000 Kelvin. Perfect to use indoors. The light bulbs come packaged in approximate 4" x 4.45" x 2.25" box.