*24x48, 24"x48" ceiling tile with 1" wide T-bar
0,  0.5, 0.5, 24,48, 23,-1
0,  0.5,47.5, 24,48, 23,-1
90, 0.5, 0.5, 48,24, 47,-1
90, 23.5,0.5, 48,24, 47,-1