Lift Roll Windows

Bring a room to life with dramatic lift roll windows. While covering expansive openings, these customized hardwood windows easily lift and roll. Seamlessly blend indoor and outdoor living with lift roll windows engineered to exceed expectations and tested for performance excellence.

Lift Roll Windows Data Sheet


Operating Assembly
Window sashes ride on carriages consisting of two sets of twin rollers mortised into the bottom of each moving sash. The sash is raised onto its carriage by rotating the operating lever handle 180°. Lifting gear connected to a tie rod transmits motion to the carriage, lifting sash. Based on G-U 933 or FFI Lift/Roll operating hardware.

  • Internal carriage assembly (drive bars, wheel hub, shafts, rivets), lock kit, link rods, and connectors are zinc
  • chromate coated steel or 304 stainless steel.
  • Lock face and edge stile cover are clear anodized (EV-1) or dark bronze anodized (EV-5) aluminum.
  • External guides and tracks are clear anodized (EV-1) or dark bronze anodized (EV-5) aluminum.

Egress: Properly-sized units meet egress requirements using standard hardware configuration.

Lever Handle
Standard handles are solid brass.

Finishes: Satin Nickel (US15), Polished Brass (US3), Satin Anodized Aluminum (US28).

Optional Hardware
Keyed locks.

Insect Screens

3/4" x 1/4" tubular extruded frames set in wood frame surround. Extruded frames in anodized bronze, mill finish aluminum or custom color painted aluminum. Mesh of 18 x 16 screen cloth held with vinyl spline, available in charcoal finished aluminum, mill finish aluminum, stainless steel or bright brass. Maximum width of screen mesh is 72".

Standard Configurations

X = Operable sash, O = Fixed sash, P = Pocket OX , OXXO , OXO , XP , PXXP


All glazing is per project specifications. Duratherm can accommodate most configurations and make-ups from 1/8" single glazed to a maximum of 1" security glass. Refer to the Glass and Glazing Guide in the Introduction section of this binder. Clear glass opening: Unit height minus 10 1/4". For clear glass width, contact factory.


Double continuous extruded silicone flap gasket set in rebate around the perimeter of the sash. Engaging the lever handle compresses the weather-strip to ensure a tight seal.


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

Minimum: 36” for OX configuration.
Maximum: Maximum varies per configuration.

Minimum: 36”
Maximum: 66"

For OX configuration, equal-sized sashes.
Based on:
20" clear width
24" clear height
5.7 sq ft clear opening
Minimum unit width: 50"
Minimum unit height: 36"

To meet egress requirements:
At minimum unit width of: 50", height must be at least: 56"
At minimum unit height of: 36", width must be at least: 61"

Frame Depths
Standard: 6 1/4”
Minimum*: 6 1/4”
Maximum: 10”

Static Air Infiltration:
ASTM E283 cfm/ft2 @ 1.57 psf

Allowed 0.30 Test Result 0.05

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.

1": 0.29 with Argon: 0.24

Total Unit:

1": 0.33 with Argon: 0.29

Exterior Wood Species

  • Cypress

  • Honduran Mahogany

  • Jarrah

  • Redwood

  • Sapele Mahogany

  • Spanish Cedar

  • Teak

Interior Wood Species

  • Ash

  • Cherry

  • Douglas Fir

  • Maple

  • Red Oak

  • White Oak

  • Cypress

  • Honduran Mahogany

  • Sapele Mahogany

  • Spanish Cedar

  • Teak

Lift Roll Window 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.