Metal Acoustical Assemblies Up to STC 46 Model AS46P Cut Sheet Model 4S46P Details STC 47-48 Model AS48C Cut Sheet Model AS48C Details STC 49-54 Model AS54C Cut Sheet Model AS54C Details STC 55 Model AS55P Cut Sheet Model AS55P Details Component Details BL Astragal DG20 Door Vision IL Astragal L Frame PDB 55 Cam Lift Hinge SS2C Split Frame Anchor Details 100-Wire Anchor 204-Metal Stud Anchor 300-Existing Wall Anchor 400-Wood Stud Anchor 501-Fixed Floor Anchor Welding Details Weld Type 1