Long Dimension Chart Room Size 8x10 8x14 10x12 10x16 12x14 12x20 14x20 16x18 18x20 20x24 Ceiling Area (sq.ft) 80 112 120 160 168 240 280 288 360 480 10'x12' Wall Molding 4 5 5 6 6 7 7 7 8 9 12' Main Tees 2 2 2 5 5 4 8 8 9 8 2' x 4' Ceiling Panel 4' Cross Tees 8 12 15 21 18 27 36 32 41 55 Panels 10 14 15 20 21 30 35 36 45 60 2' x 2' Ceiling Panel 4' Cross Tees 8 12 15 21 18 27 36 32 41 55 2' Cross Tees 5 12 18 30 14 30 39 27 30 48 Panels 20 28 30 40 42 60 70 72 90 120   Use this chart when main tees run the length of the room. (fig A)     Short Dimension Chart Room Size 8x10 8x14 10x12 10x16 12x14 12x20 14x20 16x18 18x20 20x24 Ceiling Area (sq.ft) 80 112 120 160 168 240 280 288 360 480 10'x12' Wall Molding 4 5 5 6 6 7 7 7 8 9 12' Main Tees 2 3 2 3 4 4 6 7 6 9 2' x 4' Ceiling Panel 4' Cross Tees 9 11 12 16 18 25 30 32 40 51 Panels 10 14 15 20 21 30 35 36 45 60 2' x 2' Ceiling Panel 4' Cross Tees 9 11 12 16 18 25 30 32 40 54 2' Cross Tees 12 12 10 15 18 24 28 32 36 50 Panels 20 24 30 40 42 60 70 72 90 120   Use this chart when main tees run the width of the room. (fig B)         Information provided by: