12 ft x 9/16 in Armstrong Interlude XL HRC ID Main Beam - 6100HRC
4 ft x 9/16 in Armstrong Interlude XL HRC Cross Tee - XL6140HRC
2 ft x 9/16 in Armstrong Interlude XL HRC Cross Tee - XL6120HRC
4 in x 9/16 in Armstrong Interlude XL HRC Dimensional Cross Tee - XL6104HRC
5 ft x 1 3/4 in Armstrong Interlude XL HRC Dimensional Tee 9/16 in Cross Tee - XL6150HRC