Hardware

Operator

Zinc chromate shoot bolt connected to lever handle controls. For tall, narrow units, shoot bolt is rebated into sash stiles (one each stile); short, wide units have shoot bolt rebated into top rail. Turning the lever handle engages the shoot bolts into strike plates at the head or jambs depending on configuration.
Egress: Properly-sized units meet egress requirements using standard hardware configuration.

Lever Handle

Operating hardware accepts any lever handle with 43mm attachment spacing and 7mm square spindle. A wide variety of styles and finishes is available from various manufacturers.

Optional Hardware

Custodial locks, sash restrictors, removable handles, remote pole operation.

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: 18”
Maximum: 96"

To ensure smooth and troublefree operation over time:
At maximum width of: 72", limit height to: 36"
At maximum height of: 96", limit width to: 28"

Egress

Based on:
20" clear width
24" clear height
5.7 sq ft clear opening
Minimum unit width: 25"
Minimum unit height: 72"

To meet egress requirements:
At minimum unit width of: 25", height must be at least: 72"
At minimum unit height of: 72", width must be at least: 25"

Frame Depths

Standard: 6 1/4”
Minimum*: 5 1/2”
Maximum: 10”

(*Contact factory for frame depths less than 6 1/4")