Significantly reduce the time and labor associated with measuring, cutting and framing drywall soffits. Drywall grid systems from Armstrong Ceiling Solutions have knockouts at 6-inch and 8-inch centers to reduce cutting time, alignment holes to make screw installation simple, and form perfect 30-degree, 45-degree, 60-degree, 75-degree and 90-degree angles. Flattened bulb is offset to allow true angles without interference and bending crimp prevents misalignment.