Abundant Energy
Pro-seal is a durable maintenance-free extruded aluminum glazing system. Use on any sloped or vertical application. Mount your insulated glass, single plane or plastic glazing on your wood, steel or aluminum system. Water tight EPDM rubber gaskets stop leaks. Pro-seal's integral gutters weep condensates away from glass and the framing members.
CO-EX Corporation 
CO-EX Corporation manufacturers a wide range of multi-wall sheet and panel products geared toward the roofing, skylight and façade building market. These products all exhibit very high insulation values, high light transmission along with tremendous impact resistance (100 times greater than glass) all while being much lighter weight than glass or solid sheet materials.
CPI Daylighting Inc. 
World Class leader in the design and manufacture of daylighting systems. CPI offers design, fabrication and installation of innovative translucent Pentaglas® & Quadwall® systems, Glass Skylights and ControLite® Intelligent Daylighting systems. CPI systems provide excellent longevity with unrivaled thermal / solar, life safety and structural performance. Suitable for Green Construction / LEED projects.
CrystaLite 
CrystaLite glass and dome unit skylights, custom slope glazing, and sunrooms are NFRC Certified and qualified products meet or exceed ENERGY STAR® criteria. Custom series products are structurally verified by an independent licensed engineer. CrystaLite slope glazing have been tested in accordance to ASTM procedures for air infiltration and water penetration resistance of up to 30 psf.
Dome'l Inc.
Dome'l Architectural Series skylights combine rugged quality materials with fully engineered designs - perfect fit for any project or condition. From comprehensive engineering analysis to hand-crafted fabrication, every step is scrutinized to meet Dome'l strict standards for exceptional performance and unmatched aesthetics. Dome'l works directly with architects from design conception to job site installation.
![[IBP Glass Blocks]](../../mfg/i/ibp.jpg)
Innovative Building Products
manufactures a glass block installation system that uses an aluminum frame to eliminate the use of mortar. The IBP grid system makes beautiful windows, showers, walls, floors and skylights easier than ever to install.
Kalwall Corporation
Leading the world in the innovation and practical application of controlled natural daylighting technology since our origination of the Translucent, Structural Sandwich Panel over 50 years ago. Museum-quality Daylight™ - Unequaled Thermal/Solar, Fire and Structural Performance meet the most demanding codes – LEED contribution – Green – engineering support - Daylight Modeling. Skylights of every imaginable configuration.
Lane-Aire Manufacturing Corp.
As a leading manufacturer of skylights since 1963, Lane-Aire continues to outdistance our competitors with innovative design, engineering, and performance. We constantly monitor architectural trends to bring you the most contemporary designs. Lane-Aire supports our customers through all phases of design and installation from simple residential projects to complex construction with unique geometric shapes.
![[Major Skylights]](http://64.130.11.87/mfg/m/majorindustries-10.jpg)
Major Industries 
Major offers a wide range of custom daylighting systems – from energy-saving Guardian 275® translucent panel skylights and curtainwall to LightBasic™ value-engineered curtainwall to Auburn® glass, polycarbonate multi-wall and acrylic skylights. We will work with you to find a daylighting solution that fits both your needs and budget.
Metcoe Skylight Specialties
Metcoe Skylight Specialties is recognized as one of the leading manufacturers and installers of custom metal-framed skylights. Metcoe specializes in all skylight sizes from small to monumental. Fully tested conventional and 4-sided glazing systems. Single source responsibility for design, fabrication, and installation for more than 40 years. Miami- Dade approved.
O'Keeffe's
Welcome to O'Keeffe's-With thousands of successful small to monumental projects worldwide and over 60 years of experience with glass and plastic glazings. O'Keeffe's design staff can execute virtually any custom skylight application to fit your specific project requirements.
Oldcastle BuildingEnvelope™
Oldcastle BuildingEnvelope™ is the leading supplier of architectural glass and aluminum glazing systems, including custom-engineered curtain wall and window wall, architectural windows, storefront systems, doors and skylights to architects, to building developers and owners, contractors and the entire commercial glazing community.
Polygal
The pioneers in polycarbonate multi-wall sheets and profiles. Our material is like putty in the architects' hands where you are only limited to your imagination. Create a sense of openness and flow through bringing in natural light on your next roofing and/or facade project. We offer an extensive portfolio of products for the architectural, greenhouse and industrial markets.
Solar Innovations
Solar Innovations, Inc. provides custom designed and manufactured fixed and operable skylights including single slope, double pitch, segmented barrel vault, conservatory nose, and lantern options for residential and commercial applications. Solar Innovations’ all aluminum or aluminum exterior/wood interior products can incorporate ventilation and decorative accessories for seamless transition from the new structure to your home.
Structures Unlimited
Next-generation daylighting solutions allow architects to manage daylight in large spaces and balance the energy and daylight performance of any building. A unique aluminum box beam superstructure, blended with translucent, glare-free Kalwall panels into a total composite daylighting system for clearspans to 150 feet. Many energy-saving options from R-4 to R-46. Pre-engineered canopies and walkways available.
Sundance Supply
We provide the covering - you provide the frame. Dramatic savings over conventional commercial skylights. Whatever your design criteria, application or skylight style, we can provide a commercial grade multiwall polycarbonate covering for your frame. Single pitch, double pitch, pergolas, barrel vaults, awnings, greenhouses, sunrooms, atria and more. You build the frame and we can cover it.
Unicel Architectural Corp.
With over 45 years experience in designing, manufacturing, and installing skylight systems, Unicel Architectural provides utmost quality and supports LEED® criteria, while ensuring flexibility for creative design and optimal aesthetics. From hospitals to libraries to immense shopping complexes, Unicel’s skylight systems enhance both form and function in significant construction projects around the world.
4specs Discussion Forum - Great place to ask questions about specifications, products and technical data. Free - no registration required to read or post (subject to moderation).
Abundant Energy
Pro-seal is a durable maintenance-free extruded aluminum glazing system. Use on any sloped or vertical application. Mount your insulated glass, single plane or plastic glazing on your wood, steel or aluminum system. Water tight EPDM rubber gaskets stop leaks. Pro-seal's integral gutters weep condensates away from glass and the framing members.
CO-EX Corporation
CO-EX Corporation manufacturers a wide range of multi-wall sheet and panel products geared toward the roofing, skylight and façade building market. These products all exhibit very high insulation values, high light transmission along with tremendous impact resistance (100 times greater than glass) all while being much lighter weight than glass or solid sheet materials.
CPI Daylighting Inc.
World Class leader in the design and manufacture of daylighting systems. CPI offers design, fabrication and installation of innovative translucent Pentaglas® & Quadwall® systems, Glass Skylights and ControLite® Intelligent Daylighting systems. CPI systems provide excellent longevity with unrivaled thermal / solar, life safety and structural performance. Suitable for Green Construction / LEED projects.
CrystaLite
CrystaLite glass and dome unit skylights, custom slope glazing, and sunrooms are NFRC Certified and qualified products meet or exceed ENERGY STAR® criteria. Custom series products are structurally verified by an independent licensed engineer. CrystaLite slope glazing have been tested in accordance to ASTM procedures for air infiltration and water penetration resistance of up to 30 psf.
Dome'l Inc.
The gold standard. Dome’l architectural series skylights meet the demands of the most discriminating customer. Our commercial series offers a variety of high quality, low cost options for budget conscious projects. Dome’l works directly with architects or engineers to create special designs and shapes – either large or small.
Innovative Building Products
manufactures a glass block installation system that uses an aluminum frame to eliminate the use of mortar. The IBP grid system makes beautiful windows, showers, walls, floors and skylights easier than ever to install.
Kalwall Corporation
Leading the world in the innovation and practical application of controlled natural daylighting technology since our origination of the Translucent, Structural Sandwich Panel over 50 years ago. Museum-quality Daylight™ - Unequaled Thermal/Solar, Fire and Structural Performance meet the most demanding codes – LEED contribution – Green – engineering support - Daylight Modeling. Skylights of every imaginable configuration.
Lane-Aire Manufacturing Corp.
As a leading manufacturer of skylights since 1963, Lane-Aire continues to outdistance our competitors with innovative design, engineering, and performance. We constantly monitor architectural trends to bring you the most contemporary designs. Lane-Aire supports our customers through all phases of design and installation from simple residential projects to complex construction with unique geometric shapes.
Major Industries
Major offers a wide range of custom daylighting systems – from energy-saving Guardian 275® translucent panel skylights and curtainwall to LightBasic™ value-engineered curtainwall to Auburn® glass, polycarbonate multi-wall and acrylic skylights. We will work with you to find a daylighting solution that fits both your needs and budget.
Metcoe Skylight Specialties
Metcoe Skylight Specialties is recognized as one of the leading manufacturers and installers of custom metal-framed skylights. Metcoe specializes in all skylight sizes from small to monumental. Fully tested conventional and 4-sided glazing systems. Single source responsibility for design, fabrication, and installation for more than 40 years. Miami- Dade approved.
O'Keeffe's
Welcome to O'Keeffe's-With thousands of successful small to monumental projects worldwide and over 60 years of experience with glass and plastic glazings. O'Keeffe's design staff can execute virtually any custom skylight application to fit your specific project requirements.
Oldcastle BuildingEnvelope™
Oldcastle BuildingEnvelope™ is the leading supplier of architectural glass and aluminum glazing systems, including custom-engineered curtain wall and window wall, architectural windows, storefront systems, doors and skylights to architects, to building developers and owners, contractors and the entire commercial glazing community.
Polygal
The pioneers in polycarbonate multi-wall sheets and profiles. Our material is like putty in the architects' hands where you are only limited to your imagination. Create a sense of openness and flow through bringing in natural light on your next roofing and/or facade project. We offer an extensive portfolio of products for the architectural, greenhouse and industrial markets.
Solar Innovations
Solar Innovations, Inc. provides custom designed and manufactured fixed and operable skylights including single slope, double pitch, segmented barrel vault, conservatory nose, and lantern options for residential and commercial applications. Solar Innovations’ all aluminum or aluminum exterior/wood interior products can incorporate ventilation and decorative accessories for seamless transition from the new structure to your home.
Sundance Supply
We provide the covering - you provide the frame. Dramatic savings over conventional commercial skylights. Whatever your design criteria, application or skylight style, we can provide a commercial grade multiwall polycarbonate covering for your frame. Single pitch, double pitch, pergolas, barrel vaults, awnings, greenhouses, sunrooms, atria and more. You build the frame and we can cover it.
Structures Unlimited
Next-generation daylighting solutions allow architects to manage daylight in large spaces and balance the energy and daylight performance of any building. A unique aluminum box beam superstructure, blended with translucent, glare-free Kalwall panels into a total composite daylighting system for clearspans to 150 feet. Many energy-saving options from R-4 to R-46. Pre-engineered canopies and walkways available.
Unicel Architectural Corp.
With over 45 years experience in designing, manufacturing, and installing skylight systems, Unicel Architectural provides utmost quality and supports LEED® criteria, while ensuring flexibility for creative design and optimal aesthetics. From hospitals to libraries to immense shopping complexes, Unicel’s skylight systems enhance both form and function in significant construction projects around the world.