Single-Hung Windows

For excellent weather-tight integrity, choose a single-hung window with a sliding lower sash and a fixed upper sash, or custom operation. Our durable single-hung hardwood windows are crafted with tradition and care, bringing every detail of the wood to fruition. Providing versatility in size, our classic single-hung windows accentuate the beauty in your design.

Single-Hung Windows Data Sheet

Hardware

Meeting Rail Latch
Oxidized bronze alloy. Located at the center of the meeting rail, the latch’s cam action manually draws the sash into a locked position.

Finishes: Oil-rubbed Bronze (US10B), Lacquered Red Bronze (US20A), White Bronze (US26D).

Balances
Standard: Ultralift 88L series 670 heavy duty tube / spring balances, Heavy Duty BSI, or Amesbury Group fully concealed block and tackle balances mortised into the stiles of the operable sash.

Custom: Traditional weight and chain or clock spring balance systems are available on a custom basis. Contact factory for more information

Sash Locks (Included for oversized units)
Oxidized bronze alloy at midpoint of sash stiles. Turning the side latch compresses the weather-strip and locks the sash at each jamb.

Finishes: Oil-rubbed Bronze (US10B), Lacquered Red Bronze (US20A), White Bronze (US26D).

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

Optional Hardware
Custodial locks, sash restrictors.

Insect Screens

1" x 1/4" tubular 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". Wood-framed screens are available.

Glazing

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 7 3/4", unit width minus 6 3/4".

Weather-Stripping

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.

Sizing

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

Width
Minimum: 18”
Maximum: 72"

Height
Minimum: 36”
Maximum: 96"

Egress
Based on:
20" clear width
24" clear height
5.7 sq ft clear opening
Minimum unit width: 25"
Minimum unit height: 68"

To meet egress requirements:
At minimum unit width of: 25", height must be at least: 68"
At minimum unit height of: 68", width must be at least: 25"

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

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

Allowed 0.10 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

Passed

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

N/A

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

N/A

Forced Entry: ASTM F588

Passed

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": 0.34 with Argon: 0.30

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.

Passed

Wood Species & Finishes

Duratherm sources all materials by project — from only providers we know and trust. Many of our woods are from Forest Stewardship Council® (FSC- C108949) certified sources. We obtain others from sustainably harvested plantations. Fourteen domestic and exotic wood species offer a wide range of colors, grains, and textures.

Please contact us for information about finishing options (including paint, Sikkens, clear laquer, stain, bleach stain, oil, etc.) and to discuss the use of a species not in our standard offering. We consider availability, durability, machining, and gluing characteristics to determine the feasibility of your choices

Exterior Wood Species

  • African Mahogany
    Exterior

  • Cypress
    Exterior

  • Honduran Mahogany
    Exterior

  • Jarrah
    Exterior

  • Redwood
    Exterior

  • Sapele Mahogany
    Exterior

  • Spanish Cedar
    Exterior

  • Teak
    Exterior

Interior Wood Species

  • African Mahogany
    Interior

  • Ash
    Interior

  • Cherry
    Interior

  • Cypress
    Interior

  • Douglas Fir
    Interior

  • Honduran Mahogany
    Interior

  • Maple
    Interior

  • Red Oak
    interior

  • Sapele Mahogany
    Interior

  • Spanish Cedar
    Interior

  • Teak
    interior

  • White Oak
    Interior

Single-Hung Detail

1HEAD

2UPPER JAMB

3LOWER JAMB

4SILL

5MEETING RAIL

Glazing

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.