Double-Hung Windows

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.

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.

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".

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.

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”

Allowed 0.10 Test Result 0.007

Allowed 0.0 Test Result 0.0

Passed

N/A

N/A

Passed

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

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.