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845.647.1900

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custom RTS-430 steel windows in Brooklyn brownstone

Custom Steel Windows in Brooklyn That Do More

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Optimum Window’s FR4700 Steel Casement Windows installed in a New York City building, handcrafted by skilled American craftspeople.

FR4700 Steel Casement Windows: Safety in Style

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Brooklyn brownstone with custom steel window and doors systems by Optimum Window

Reimagining a Brooklyn Brownstone with Modern Steel Elegance

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custom green steel windows and doors designed for modern house by Olson Kundig

Green Steel Style: Olson Kundig’s Modern Masterpiece

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FR8600 fire-rated-steel series windows in NYC building

Safety Meets Design at Abraham Lincoln High School

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when are fire-rated windows required?

When Are Fire-Rated Windows Required?

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RTS-430 casement assembly in apartment building

Built to Last, Designed to Impress

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Custom steel window restoration for St. George Tower in Brooklyn

Restoring History at 30 Stories: St. George Tower’s Steel Window Revival

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Optimum Window Thermally broken steel windows - RTS-430 series

Montana Dream Home Showcases RTS-430 Thermally Broken Steel Windows

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architectural Steel
Reliant

(Hot-Rolled Steel)

Non-Thermally Broken

casement

projected

Door

Top-Hung Sliding Door

Interior door

Interior Bi-Fold Door

pivot door

Thermally Broken

Casement

Projected

Door

Lift and Slide Door

Multi-Slide Door

Bi-Fold Door

Pivot Door

flex

Non-Thermally Broken

Casement

Projected

Door

Top-Hung sliding door

Interior Door

Interior Bi-Fold Door

Pivot Door

Thermally Broken

Casement

Projected

Door

Bi-Fold Door

Multi-Slide Door

Lift And Slide Door

pivot door

Fire-Rated Steel

(Operable Windows)

single-hung

double-hung

single-slider

projected

casement

door

fixed/picture

FR7650TSH

FR7650TDH

FR7600TSS

FR8600

FR4700

FR55

FR6000/FR55

Detention Prison Systems

projected guard window

projected max window

single-hung window

4700GW

9000

4700DSH

Thermally Broken Aluminum

tilt & turn window

project-in window

inswing casement

terrace door

optimum window mfg corp​
O: 845.647.1900
F: 845.647.1494
28 CANAL St. ELLENVILLE, NY 12428
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