Leading GFRG Access Panels manufacturer

We specialize in high-quality, custom GFRG access panels with over 800 size and thickness options, including our top-rated ½" drywall panels. Trusted by architects, contractors, and builders, our ceiling access doors offer precision, durability, and seamless design for any project.

Celebrating 20 Years of Expertise

This June marks Castle’s 20th anniversary since selling its very first access panel. Over two decades of innovation, growth, and trusted partnerships, Castle is proud to announce the expansion of an additional 15,000 sq. ft. to its facility—setting the stage for continued excellence in manufacturing. This milestone reinforces our commitment to continuously delivering the best drywall access panels.

✓Corporate ✓Hospitality ✓Retail ✓Commercial ✓ Institutional ✓Residential

20

Years of expertise

800+

Combination size available

45,000

Sq/ft Factory

14

Global warehouses

As a trusted leader in Private Label OEM GFRG Access Panels, we specialize in delivering seamless, high-quality custom access panels and GRG column covers for construction projects worldwide.

GFRG Access Panels

Key Features

Stealth Integration

Fully Customizable

Project Management

Sustainable and Reliable

Best Price and Values

Maximize Efficiency

Advanced GFRG Access Panel Technology – Engineered for Performance

Our glass fiber reinforced gypsum panels are manufactured using Poraver® expanded glass beads, a high-performance filler made from 70% post-consumer recycled glass. This material is not only lightweight and non-toxic — it also meets the highest standards for fire resistance, dimensional stability, and long-term durability.

Doesn’t matter if you need small or large access doors, from standards to customize, we have a solution for you.

Castle's special offer half inch access panel and door option to match any drywall need

Why SEAMLESS™

With a smart design that includes deeper tapered edges, level 5 finish, and pre-countersunk locations, our panels provide superior strength while maintaining a stealthy integration that contractors and designers prefer. The hinge-free appearance ensures your access points remain virtually invisible, offering both function and beauty.

Options

Available upon request, view all options

GRG Column Covers

Castle’s GRG column covers offer architectural elegance, fire resistance, and long-lasting durability—perfect for commercial, institutional, and high-end residential projects.

Resources

Get instant access to CAD drawings, installation guides, specs, and sustainability data. Whether you’re submitting for approvals or sourcing for a large-scale project, Castle gives you everything you need — fast.

If you have any questions, feel free to reach out to us via email at inquiries@castleaccesspanels.com

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