Optimum (steel & aluminum windows & doors)

Fire Rated Double and Single Hung Steel Windows

Series SC7650

Optimum's steel double and single hung windows have been proven to withstand temperatures in excess of 1650 degrees (900 degrees C) in laboratory tests. Even after 45 minutes of fire exposure all individual muntins, mullions, jamb members and sash components remained in position. Each window features two fusible link components made of slow melting alloy. When exposed to temperatures of 165 degrees or more, the links melt and automatically seal the window shut, which prevents the spread of smoke and fire to adjacent buildings. Click here to view typical detail.

SC7650 Series Specifications

General: Steel vertical sliding window shall be Series SC7650 as manufactured by Optimum Steel Window Corporation. All windows shall carry either an MEA and or Underwriters Laboratories, Inc. (UL) label for fire resistance rating of 45 minutes, in accordance with the standards for Fire Tests of Window Assemblies, ANSI/ UL9 (NFPA 257, ASTM El63).

Materials: All principal cold rolled formed members shall be ASTM A528 Low Carbon Steel. Frame members shall have a minimum thickness of 20 gauge.

Weatherstripping: Sliding sash panels shall have EPDM gaskets throughout entire perimeter (unless otherwise noted).

Finish: All units shall be reasonably free from scratches and blemishes and have the following:

• Zinc Coating (ASTM A525 Z200) on both surfaces, applied by a continuous hot dipped process (The Sendzimir System), followed by a "skin pass" (smoothing) procedure which eliminates roughness.
• Primer consisting of epoxy-ureic paint, applied at a thickness of 5 microns on both surfaces.
• Baked polyester powder coating, (baked at 180-200 degrees C for 18-20 minutes) with an average thickness of 80 microns.

Glazing: Windows shall be factory glazed with obscure or clear 1/4" wire glass. Lites shall have a minimum of 24 gauge wire with a maximum mesh size of one square inch as per Underwriters Laboratories requirements. Individual lites of glass shall not exceed a daylite dimension of 895 square inches each. Glass shall comply with ANSI Z97.l and ASTM C1036.

Construction: Frame to be formed of 20 gauge steel sections, with corners which are mechanically assembled and reinforced. Sash members shall be 20 gauge formed sections which are coped and assembled. Corner joints shall be fully scaled to prevent leakage. Horizontal muntins, when required, shall consist of two sections of 20 gauge forming an "H" Section. Approved 1/4" wire glass to be held in 3/4" uniform edge bite.

Hardware: Lower sliding panel shall be furnished with standard pull handles and sweep lock at meeting rail. A fusible link assembly attached directly to the front balancers, functions as the self-closing mechanism.

Installation: The installer shall set all window frames in a level, plumb and square condition without distortion. Units shall be promptly anchored, flashed and caulked in accordance with good window installation practice. For additional information please click HERE to visit their corporate site.

Self Closing Sliding Steel Window

 7600 Series

Optimum's fire rated sliding steel window features a self-closing mechanism that automatically closes the window in the event of fire.  This sliding steel window incorporates the same type of fusible link utilized in Optimum's other fire rated products.  Click here to view typical detail.

SC7600 Series Specifications

General: Steel horizontal sliding window shall be Series SC7600 as manufactured by Optimum Steel Window Corporation.  All windows shall carry either an MEA or Underwriters Laboratories, Inc.  (UL) fire resistance rating of 45 minutes in accordance with the fire standards for Fire Tests of Window Assemblies, ANSI/UL9   (NFPA 257, ASTM E163).

Materials:  All principal cold rolled formed members shall be ASTM A528 low carbon steel.   Frame members shall have a minimum thickness of 20 gauge.

Weatherstripping:  Sliding sash panel shall have EPDM gaskets throughout entire perimeter (unless otherwise noted).

Finish:  All units shall be reasonably free from scratches and blemishes having the following:

• Zinc coating (ASTM A525 Z200) on both surfaces, applied by a continuous hot dipped process (the Sendzimir system) followed by a "skin pass" (smoothing) procedure which eliminates roughness.
• Primer consisting of a thermosetting epoxy-ureic paint, applied at a thickness of 5 microns on both surfaces.
• Baked polyester powder coating, (baked at 180-200° C for 18 to 20 minutes) with an average thickness of 80 microns.

Glazing: Windows shall be factory glazed with obscure or clear 1/4" wire glass.  Lites shall have a minimum of 24 gauge wire and a maximum mesh size of one square inch, as per Underwriters Laboratories requirements.  Individual lites of glass shall not exceed a day lite dimension of 895 square inches each.  Glass shall comply with ANSI Z97.1 and ASTM C1036.

Construction: Frame to be formed of 20 gauge steel sections, with  corners which are mechanically assembled and reinforced.  Sash members shall be 20 guage formed sections which are coped and assembled.  Corner joints shall be fully sealed to prevent leakage.   Vent sash shall roll on a 18 gauge track with 1/4" diameter steel ball bearing rollers.  Horizontal muntins, when required, shall consist of two sections of 20 gauge steel forming an "H" section. Approved 1/4 " wire glass to be held in a 3/4" uniform edge bite.

Hardware:  Sliding panel shall be furnished with a white bronze operating handle, which is attached to the jamb of the operable sash.  A spring activated automatic closing device is used in conjunction with a 165 degree fusible link assembly mounted on the unit.   This assembly functions as a self-closing mechanism.

Installation:  The installer shall set all window frames in a level, plumb and square condition without distortion. Units shall be promptly anchored, flashed and caulked in accordance with good window installation practice. 

 For additional information please click HERE to visit their corporate site.