12 ft x 15/16 in Armstrong Prelude XL Exposed Tee ID Main Beam - 7300
12 ft x 9/16 in Armstrong Suprafine XL Exposed Tee ID Main Beam - 7500
12 ft x 9/16 in Armstrong Silhouette XL w/ 1/8 in Reveal ID Main Beam - 76008
12 ft x 9/16 in Armstrong Interlude XL HRC ID Main Beam - 6100HRC
12 ft x 1 1/2 in Armstrong ShortSpan Drywall Framing System Tee - S7712G90
12 ft x 1 1/4 in x 1 1/4 in Armstrong Locking Angle Molding - LAM12
12 ft x 1 1/2 in Armstrong Drywall Grid System HD Main Beam - HD8906
12 ft x 9/16 in Armstrong Silhouette XL w/ 1/4 in Reveal ID Main Beam - 7600
12 ft x 15/16 in Armstrong Prelude XL Fire Guard Exposed Tee ID Main Beam - 8300
12 ft x 15/16 in Armstrong Environmental Prelude Plus XL Aluminum Exposed Tee LD Main Beam - AL7200WA
12 ft x 15/16 in Armstrong Prelude XL Exposed Tee ID Main Beam - 7300BL
12 ft x 15/16 in Armstrong Prelude XL Exposed Tee HD Main Beam - 7301WA
12 ft x 15/16 in Armstrong Prelude XL Exposed Tee HD Main Beam - 7301BL
12 ft x 15/16 in x 15/16 in Armstrong Co-Extruded Clean Room Hemmed Angle Molding - EA7812
12 ft x 15/16 in Armstrong Co-Extruded Clean Room ID Main Beam - EA7900
