PC 7 FD y 3 Hour Door Partxfctxard Hardwood back Crossbaoding Hardwood lace weneer Algoma Hardwoods Inc PC 7 is a commercial door made with particleboard core and skins Solid lumber outer stiles along with Structural Composite Lumber SCL rails and inner stiles are glued to the core prior to col d pressi ng a 3 pi y ski n each si de of the core at ambient air temperature Algoma Hardwoods Inc uses only the better of two grades of door core particleboard
SR Acoustical amp Acoustical FD Vz Hour Door Neutral or Positive Pressure See text below for Stile and Rail dimensions STC 40 STC 45 STC43 with 1 3 Hour Label STC 39 with Lite Opening Algoma s Acoustical doors were tested as operating units in a complete system with hollow metal framing back filled with mortar gasketing drop seal and threshold where applicable the same as supplied to the jobsite thus ensuring that the specified STC ratings are achieved