CGC - 1/2" SHEETROCK UltraLight Drywall Gypsum Panel, 4' x 8' CGC's Sheetrock® UltraLight Gypsum Panel is the only certified sag-resistant lightweight wallboard that is ICC certified for both walls and ceilings. These panels are the lightest 1/2" wallboard panels available weighing 30% lighter or up to 10 pounds less per 12' sheet versus traditional drywall. These UltraLight panels are the only lightweight 1/2" wallboard that are building code approved for ceiling installations, which means only one type (excluding wet areas) of 1/2" panel is needed for a typical project. Benefits are: Quicker and Easier Installation Reduces Strain and Fatigue Easy to Score and Snap Tapered Edges for Cleaner Finishing Once primed, can be Painted, Wallpapered, or Textured for the desired look. A Product of Canada. Data Sheet