Old Window Fixed Frame

Fixed Frame Windows

A fixed frame hardwood window, known commonly as a picture window, is a non-operable window that creates the appearance of a picture frame on the wall. They are commonly installed as a single window or used in combinations with more functional window types creating a spectacular window wall. These hardwood windows are always custom built to your precise specifications to help bring your vision to life. Create a unique appearance from the interior and exterior with large and flat glass surfaces.

Fixed Frame Windows Data Sheet


All glazing is per project specifications. Duratherm can accommodate most configurations and make-ups from 1/8” single glazed to a maximum of 1 3/4” security glass.

Clear glass opening: Unit height minus 4 1/4”, unit width minus 3 1/2”.


The minimums and maximums shown are intended as guidelines. For applications that exceed these ranges, please contact the factory for assistance.

Minimum: 8” or per glazing restrictions
Maximum: per glazing restrictions

Minimum: 8” or per glazing restrictions
Maximum: per glazing restrictions

Frame Depths
Standard: 6¼”
Minimum*: 4”
Maximum: 10”
(*Contact factory for frame depths less than 6¼")

Static Air Infiltration:
ASTM E283 cfm/ft2 @ 1.57 psf
Allowed 0.30
Test Result 0.007
Water Infiltration:
ASTM E547-cyclic ASTM E331-static at 8 psf
Allowed 0.0
Test Result 0.0
Load Deflection:
ASTM E330 10 sec at +60 and -60 psf


Sash Torsion:
AAMA/WDMA/CSA 101 / I.S.2 / A440


Vertical Deflection:
AAMA/WDMA/CSA 101 / I.S.2 / A440


Forced Entry:


Thermal TransmissionResults
Center of Glass:
ASTM C-236 U-value using Viracon VE1-2M Low E glass and Lawrence Berkeley Laboratories Winow 5.2 analysis program.
NFRC certified.

1": 0.29 with Argon: 0.24

Total Unit:

1": 0.33 with Argon: 0.29

Hurricane ImpactResults
Large Missile Impact and Cyclical Air Pressure:
  • ASTM E1996-05, ASTM E1886-05
  • Tested at 42 psf
  • Wind Zone 3, not including Dade County, FL
  • Missile Level D

Note: Contact factory for size limitations and detail modification required for hurricane certified units.



Exterior Wood Species

  • Cypress

  • Honduran Mahogany

  • Jarrah

  • Redwood

  • Sapele Mahogany

  • Spanish Cedar

  • Teak

Interior Wood Species

  • Ash

  • Douglas Fir

  • Cherry

  • White Oak

  • Maple

  • Red Oak

  • Sapele Mahogany

  • Honduran Mahogany

  • Cypress

  • Teak

Clad Exterior Options

Available from RAL.

Offering a clad exterior/wood interior offering on product. All available options, please see the RAL site for full selection. The shade may vary on actual product. Please contact Duratherm to discuss your custom needs.

Fixed Frame Detail





Dry Glazing

Specially developed extruded silicone gasket sets the glass by compression. Our proprietary system is long-lived, low maintenance and water resistant.

Wet Glazing

Our special silicone wet glazing compound bonds to the glass for long-lived sealing. Plus, our continuous extruded silicone weatherstrip runs around the frame perimeter and the seal is not compromised by seasonal expansion and contractions of the sash and frame