Sound Control (STC) Doors

  • Fire rated up to STC 53 for singles and STC 48 for pairs of doors
  • DCI’ patented STC core  design
  • Up to and including STC 48 for pairs of doors; includes factory-supplied astragal
  • All STC ratings available for single doors up to and including STC 54
  • 1 3/4” doors (light weight for STC doors)
  • Any manufacturer’s hinge locations
  • Continuously welded vertical edges (seamless) standard
  • Uses 4 1/2” 180 heavyweight hinge (not supplied)
  • No cam lift hinge required
  • All required seals and a threshold are included
  • Galvannealed steel standard
  • Single door vision lites available up to and including STC 48
  • Interior and exterior use
  • Rust inhibitive prime coat ANSI/SDI A250.10
  • Tested in accordance with ASTM E90-09
  • Frame must be grout filled (by others)
  • STC frames available


  • Stainless steel, available in 304 or 316 alloys


  • Up to 90 minute fire rating (Except STC54)
  •  Integral lite option
  • Flush top cap
  • Any manufacturer’s Deadlock prep, Panic prep, and Mortise sectional trim
  • Astragal (for pairs)


  • 3/16” for hinges
  • 12-gauge for locks standard
  • 14-gauge for closers standard
  • Heavier gauge reinforcements available


Door Components

Tested for Commercial & Institutional High Traffic Applications

Meets the requirements of ADA, ANSI, ASTM E152 and SDI Standards

Get your technical questions answered with installation guides, door templates, spec sheets, product catalogs, and other materials available whenever you need it.