48" x 48" Galvanized Steel Flat Panel SkyLight

48" x 48" Galvanized Steel Flat Panel Skylight 

Property owners need reliable solutions that bring sunlight indoors while keeping buildings safe. But finding a skylight that checks all the boxes—durability, energy efficiency, and emergency readiness—can be challenging. Many models fall short, lacking the strength to hold up in harsh conditions or the features needed during critical moments. 

The 48" x 48" BA-UL-SKY Galvanized Steel Flat Panel Skylight changes that with a smarter, more secure design. Equipped with a UL-tested fusible link, this skylight opens automatically during fires to release smoke, improving efficiency without needing power or manual effort. 

Its rugged 16-gauge galvanized steel frame and durable polycarbonate panels offer a tough, weather-resistant build that can handle hail, strong winds, and tampering. All while letting in plenty of natural light to reduce reliance on electric lighting. 

Why Choose the 48" x 48" BA-UL-SKY Skylight? 

• Provides Reliable Emergency Ventilation: The BA-UL-SKY uses a UL-listed heat link that activates at 165°F, opening the skylight to a full 90 degrees to vent smoke—no electricity needed. 
• Delivers Natural Daylighting: A flat design with clear polycarbonate panels allows sunlight to stream, brightening interiors and lowering lighting costs. 
• Offers Long-Lasting Durability: The steel frame and reinforced construction give the skylight the strength to resist weather, wear, and tampering in residential and commercial settings. 
• Improves Energy Efficiency: Its raised curb and 1" thick fiberboard insulation help the skylight maintain consistent indoor temperatures and reduce heating and cooling expenses. 
• Performs in All Weather Conditions: Protecting interiors from wind, water, and debris—even during extreme conditions, the BA-UL-SKY has polyurethane foam gaskets tightly around the curb. 

Product Specifications: 

• Dimensions: 48" x 48" 
• Material: 16-gauge galvanized steel 
• Finish: Mill-finished galvanized steel 
• Cover: Light-admitting polycarbonate panels surrounded by an extruded aluminum frame 
• Curb: 13.5" high galvanized steel with 3.5" pre-drilled mounting flanges and counterflashing 
• Insulation: 1" thick fiberboard insulation 
• Gasket: Polyurethane foam gasket 
• Hinges: Steel pintle hinges 
• Springs: Heavy-duty torsion coil springs 
• Dampeners: Hydraulic dampeners to control cover opening speed and prevent over-travel 
• Latches: Open automatically when the 165-degree fusible link melts and separates. Include interior and exterior pull handles for manual operation. 
• Operation: Covers spring open to approximately 90 degrees during fire events and automatically lock in the fully opened position. 

Planning a project that needs more natural light without compromising safety? The 48" x 48" BA-UL-SKY is just one of many reliable, high-performance solutions from Best Access Doors. Alongside skylights and smoke vents, we offer a full range of access doors and panels designed to meet demanding specifications and support a wide variety of building needs. 

You’ll find everything from drywall access doors that blend into walls and ceilings, to fire-rated access doors that meet code requirements, to recessed access doors for clean, flush finishes. Each product is built for durability, easy installation, and long-term performance. 

Need something more specific? Our Customization Showcase features examples of unique builds we've helped bring to life.

Request a quote now or call (800) 483-0823 to speak with a product specialist who can walk you through the best solutions for your project!