45-Minute Fire-Rated Kalamein Lot-Line Windows for NYC
Capitol Fireproof Door manufactures custom 45-minute fire-rated Kalamein lot-line windows for apartment buildings, commercial properties, and older buildings throughout New York City and Long Island.
Our steel-clad lot-line windows are designed for openings requiring approved fire-protection assemblies. Available configurations include fixed and operable sash designs, fire-rated glazing options, and custom window dimensions.
We also provide replacement sash fabrication, installation, and repairs for existing Kalamein windows. Contact our team for a free estimate or site survey to discuss your building’s requirements.
Kalamein Fire-Rated Window Options
1/4" clear wire or frosted wire glass
insulated wire glass
ceramic fire-rated glass
transoms and/or accommodation for an air conditioning unit can be added
windows can be factory-assembled if required, for an additional charge
prime gray or bronze color
fixed, single, or double hung
any mutton arrangement
all kalamein windows come complete with window frame, sash, glass, weights, pulleys, fusible links, sash lifts & latches
all windows custom made
Our windows are certified by the NYC Board of Standard and Appeals, for which we were granted the following fireproof label:
This fireproof label certifies that our windows meet or exceed fire test standards for New York City and have been approved by the NYC Department of Buildings. The labels, which indicate the “calendar number” corresponding to the NYC Department of Buildings testing results, are affixed to our windows as part of our service.
Kalamein Window Construction & Shop Drawings
CUSTOM KALAMEIN WINDOW MOLDINGS
- 1/2" steel U-channel molding is fabricated with 20-gauge steel and is cut and nailed into the sash stiles. This can accommodate 1/4" wire glass.
- Custom kalamein window sash moldings are manufactured onsite using 24-gauge steel wrapped over solid pine. They are then drawn through steel dies, and are then mitered and nailed through the sash stiles into place.
- Kalamein glass molding can accommodate 1/4" wire glass and up to 5/8" insulated glass.
- 1/2" square kalamein sash molding is also available
Installation & Repair
Capitol Fireproof Door has over 20 years of experience servicing and repairing kalamein fire-rated windows.
Our Services Include:
- Complete and comprehensive kalamein-window installation includes window assembly, fusible links and hardware
- Retro-fit kalamein sash into existing kalamein frames
- Supply and install new kalamein-window hardware
- Garbage removal and full cleanup are included
- Workmens' compensation and general liability insurance certificated can be proved upon written request
What Is a Kalamein Lot-Line Window?
A Kalamein lot-line window is a steel-clad window assembly used in certain building openings where fire protection is required. Lot-line conditions are common in New York City buildings constructed close to neighboring properties.
Capitol Fireproof Door manufactures custom 45-minute Kalamein window assemblies for qualifying applications, including replacement projects in older buildings. Window selection must account for applicable code requirements, approved assemblies and installation conditions.
Fire-Rated Glazing
Available glazing options may include wired glass, insulated wired glass and ceramic fire-rated glass. The selected glazing must be permitted by the specific window assembly listing.
Custom Steel-Clad Sashes
Kalamein window sashes can be fabricated to accommodate specialized dimensions and existing architectural openings. Replacement sashes may be possible without replacing the entire frame.
How Fusible-Link Kalamein Windows Work
Certain approved Kalamein window configurations use fusible-link mechanisms designed to release an operable sash when exposed to sufficient heat. This allows the sash to move toward its intended closed position.
Correct operation depends on the approved design, sash condition, weights, pulleys, fusible links and associated hardware. Repairs and replacement components must be compatible with the rated assembly.
Replacing an Existing Kalamein Window Sash
For qualifying installations, Capitol can fabricate replacement upper or lower Kalamein sashes to fit existing window frames. A site evaluation helps determine whether sash replacement or a complete assembly replacement is appropriate.
For related custom metalwork, explore our custom Kalamein mouldings and fire-rated Kalamein doors .
Kalamein Windows for Older NYC Buildings
Lot-line windows may be found in apartment buildings, stairwells, hallways, roof bulkheads and other specialized openings. Their use depends on the applicable building code, property-line conditions and approved construction details.
Capitol Fireproof Door works with building owners, contractors and property managers throughout New York City and Long Island on custom fire-rated window fabrication, installation and repair projects.
We also manufacture fire-rated doors and frames for commercial and multifamily properties.
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