Acoustical Hollow Metal Doors STC 45 Assembly

Lindstrom Corporation manufacturers a vertically steel stiffened 1-3/4" acoustical hollow metal door which was tested by Architectural Testing, Inc., York, PA, and achieved an STC 54 in a sealed test. When installed in a hollow metal frame by Lindstrom and sound seal gasket and threshold package by Pemko Corporation, the opening may carry an STC 45 label.


  • 14 ga face sheets of commercial A6O or 304 stainless steel
  • Doors will have continuous vertical steel stiffeners filled with mineral wool and additional sound deadening material
  • Hinge reinforcements will be 7 ga steel -All other reinforcements will be 14 ga
  • Doors will be reinforced for all surface hardware. Drilling and tapping of surface hardware to be done in field by installer

Sound Seal Gasket Package

  • Perimeter Seals - Pemko S773 x2 head and jamb seals
  • Threshold - Standard Saddle

Hardware Options

  • Hinges - HW Butt hinges I Cam lift hinges I Continuous Hinges
  • Lock Sets - Cylindrical I Mortise I Rim Exit
  • Electric hardware - Tested with electric raceway I EPT prep

Finish: Doors will be thoroughly cleaned after fabrication and given a prime coat of rust inhibiting paint. The primer will be air dryed.

Undercut: 3/8" Hinge backset: 1/4" Size limitations: Call Factory TEST RESULTS PROVIDED ON REQUEST

Shipping Options

Expedited fabrication and 2 week quick ship options available.

Acoustical Hollow Metal Doors STC 45 Assembly
Acoustical Hollow Metal Doors STC 45 Assembly