Armstrong Ceilings Prelude XL Fireguard Black 60-Pack 47.06-in Galvanized Steel Ceiling Grid Cross Tee48 in x 15 16 in x 1 11 16 in Rotary stitched web for additional torsional strength and extra stability Hot dipped galvanized coating inhibits red rusting better than electrogalvanized or painted systems XL staked on stab end detail, provides a secure locked connection, that's easy to remove, reuse and relocate 240 linear ft per carton (60 pieces per carton) Easy to cut and field modify to suit job conditions using standard tools Black colored capping