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              20 Minute Jamb

              Fire Rated Frames are Ferche Millwork’s complete line of fire rated wood door frames certified by Intertek Testing.

              Solid wood and wood veneered fire rated door jambs are certified with 20-, 45-, 60- and 90-minute ratings and are available in most wood species. The perfect hollow metal replacement frame for architects and designers to select, when a rated jamb is needed and the beauty of real wood is desired.

              • Specifications
              • Series
              • Species
              • Downloads

              F350E - door frame

               

               

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              F350E - door frame

              11/16” x 4-13/16”

              Veneered door frame set

              F350K - door frame

               

               

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              F350K - door frame

              11/16” x 5-3/8”

              Veneered door frame set

              F351E - sidelite frame

               

               

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              F351E - sidelite frame

              11/16” x 4-13/16”

              Veneered sidelite/borrowed lite window frame

              F351K - sidelite frame

               

               

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              F351K - sidelite frame

              11/16” x 5-3/8”

              Veneered sidelite/borrowed lite window frame

              F352 - sidelite frame

               

               

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              F352 - sidelite frame

              5/8” x 1-1/4” (stop)

              Veneered sidelite/borrowed lite window frame

              F355E - solid rabbeted jamb

               

               

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              F355E - solid rabbeted jamb

              1-1/4” x 4-13/16”

              Solid wood, 20 minute

              F355K - solid rabbeted jamb

               

               

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              F355K - solid rabbeted jamb

              1-1/4” x 5-3/8”

              Solid wood, 20 minute

              F359 - veneered rabbeted jamb

               

               

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              F359 - veneered rabbeted jamb

              1-1/4” x 3-3/4” (minimum)

              F365A - non rated solid rabbeted

               

               

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              F365A - non rated solid rabbeted

              1-3/16” x 4-9/16”

              F365E - non rated solid rabbeted

               

               

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              F365E - non rated solid rabbeted

              1-3/16” x 4-13/16”

              F365K - non rated solid rabbeted

               

               

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              F365K - non rated solid rabbeted

              1-3/16” x 5-3/8”

              F385E - solid flat jamb

               

               

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              F385E - solid flat jamb

              3/4” x 4-13/16”

              Solid wood, 20 minute

              F385J - solid flat jamb

               

               

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              F385J - solid flat jamb

              3/4” x 5-1/4”

              Solid wood, 20 minute

              African Mahogany

               

               

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              African Mahogany

              Sustainably harvested
              (good availability)

              Black Walnut

               

               

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              Black Walnut

              Up to 12' lengths
              (limited availability)

              Cherry

               

               

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              Cherry

              Up to 14' lengths
              (limited availability)

              Highest grade with
              lighter sapwood

              Clear Alder

               

               

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              Clear Alder

              Up to 10' lengths
              (limited availability)

              Hard & Soft Maple

               

               

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              Hard & Soft Maple

              Up to 16' lengths available

              Hickory

               

               

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              Hickory

              Rustic, heavy wood; more
              durable than red oak

              Knotty Alder

               

               

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              Knotty Alder

              Up to 10' lengths
              (limited availability)

              Natural Yellow Birch

               

               

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              Natural Yellow Birch

              Up to 12' lengths available

              Poplar

               

               

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              Poplar

              Select grade without dark
              streaks, for excellent
              stainable product

              Red Oak

               

               

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              Red Oak

              Best combination of good
              length structure and consistent colour, from the Appalachian Lumber region