Business Details
41 Years
experience
Custom Steel Windows & Doors Manufacturer Since 1985
Optimum Window has been a leader in steel window and door manufacturing since 1985, combining craftsmanship with cutting-edge technology. Our family-owned business operates from a state-of-the-art facility in Ellenville, NY, serving residential, commercial, and landmark projects nationwide. With over 35 years of experience, we specialize in custom solutions that meet rigorous performance standards while maintaining aesthetic appeal. Our team of artisans and engineers utilizes advanced machinery to produce fire-rated, architectural, and detention-grade systems, ensuring precision and durability.As an industry pioneer, we hold Underwriters Laboratories certifications and prioritize sustainability through 100% recycled steel. Our commitment to innovation and client collaboration has established us as the largest and most diversified steel window manufacturer in the United States.
Services
Steel Windows
Fire-Rated Doors
Aluminum Series
Detention Systems
Custom Fabrication
Details
- Year established: 1985
Highlights and features
- 35+ years of specialized expertise in steel fenestration systems
- Custom manufacturing with state-of-the-art computerized machinery
- Underwriters Laboratories certified fire-rated product testing
- Nationwide shipping with local New York manufacturing presence
- Sustainable practices using 100% recycled steel materials
Associations and certifications
- Underwriters Laboratories
Services
Steel Windows
Our architectural steel windows combine structural integrity with modern design for commercial and residential applications. Using cold-rolled and hot-rolled steel, we create energy-efficient systems with slim sightlines and NFRC-rated performance. Custom powder coat finishes and multi-point locking hardware ensure durability and aesthetic flexibility for high-end projects.
Fire-Rated Doors
UL-certified fire-rated doors withstand extreme temperatures up to 1600F with 45-90 minute protection ratings. Constructed from galvanized steel with ceramic or wire glass options, these doors maintain integrity during thermal shock testing. Self-closing mechanisms and factory-glazed assemblies meet NYC MEA compliance and NFPA 80 standards.
Aluminum Series
Thermally broken aluminum systems featuring Insulbar polyamide technology reduce heat transfer while maintaining structural strength. Our tilt-and-turn windows and terrace doors achieve optimal U-values with dual weather-stripping and mitered corner construction for energy-efficient commercial facades.
Detention Systems
Fully welded steel detention windows and guard systems designed for correctional facilities. ANSI/AAMA tested with reinforced frames, dual locking mechanisms, and vandal-resistant hardware. Available in 45-90 minute fire-rated configurations with optional screening and custom color finishes.
Custom Fabrication
Complete customization from initial design through manufacturing using CAD/CAM technology. We produce oversized openings, specialty shapes, and historic reproductions with precision welding and multi-axis machining capabilities. All components are fabricated in-house to meet exact project specifications.
People
Candido Perez Sr.
CEO
Founder of Optimum Window Manufacturing Corp in 1985, Candido Perez Sr. has led the company's growth into the largest U.S. steel window manufacturer through technological innovation and artisan craftsmanship.
Questions
What types of fire-rated window systems do you offer?
We provide UL-listed fire-rated windows with 45-90 minute protection ratings, including double-hung, single-hung, projected, and fixed configurations tested to UL10C and NFPA 80 standards.
Can you create custom window shapes and sizes?
Our in-house fabrication capabilities allow complete customization of window dimensions, shapes, and configurations to meet unique architectural requirements using computerized machining systems.
Do you manufacture aluminum window systems?
Yes, our Metro 680 series features thermally broken aluminum windows and terrace doors with polyamide insulating struts for improved energy efficiency in commercial applications.
Are your products suitable for correctional facilities?
Our detention-grade series includes fully welded steel windows and guard systems specifically engineered for security environments with reinforced hardware and safety glazing options.
What sustainability practices do you implement?
We use 100% recycled steel materials and maintain a zero-waste policy through comprehensive recycling programs for all metal fabrication byproducts at our Ellenville manufacturing facility.
Do you provide technical specifications for architects?
Complete CSI specifications, CAD details, and performance data are available through our online portal for architects and design professionals specifying our fenestration systems.
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