LEVELLINE Drywall Corner Trim is ideal for outside/inside corners, off-angles, tray ceilings, bay windows and more. LEVELLINE’s superior corner trim construction (tapered plastic core, joint tape and formulated surface paper) ensures drywall corners will not split or dent. LEVELLINE can also withstand structural settling from green lumber and seismic movement without cracking or popping off the wall. LEVELLINE is ideal for: Outside/Inside Drywall Corners, Off-Angles,Tray Ceilings, Bay Windows