Exterior Access Doors & Panels

Williams Brothers - WB EXT 1400 Series Rain Guard Vented Exterior Access Door / Panel with Locking T-Handle


Williams Brothers’ Exterior Access Doors and Panels are designed to provide efficient and secure service access to critical areas in walls and ceilings for a wide range of commercial, industrial, institutional and residential applications. Offering rugged, weather resistant construction, our exterior access doors are an excellent choice for exterior and interior locations where corrosion and moisture is a concern. Perfect for both new and retrofit building projects, our exterior access doors enable easy access to heating, air conditioning, plumbing, electrical and other building systems.

Sizes & Options

Williams Brothers’ Exterior Access Doors are available in a wide range of sizes designed to fit common construction dimensions with special sizes and modifications are available upon request. Popular sizes include 8×8, 12×12, 14×4, 16×16, 18×18, 24×24 and more. We also offer many additional features like insulation, locks and gaskets.


Williams Brothers prides itself on the differences we bring to our exterior access doors. Our dedication to manufacturing quality makes us the choice for construction companies, architects, and engineers that demand the best access doors and panels in the world. Once you see what separates Williams Brothers from other manufacturers, you too will appreciate and demand the Williams Brothers difference.

Product Highlights

Standard: Our WB EXT 1300 Series and WB EXT 1350 Series Exterior Access Doors are two of the finest exterior access doors on the market. Everything from their double layered 1″ GreenGuard insulation and dual weather resistive gaskets to their 16 gauge, zinc dipped steel construction make them ideal for most exterior applications. Our 1300 Series is perfect for those who need a T-Handle while the 1350 Series is perfect for those who prefer a paddle latch lock.

Aluminum: Our WB AL 1500 Series Aluminum Access Door is ideal for exteriors or interiors where corrosion or moisture is a concern. This lightweight all aluminum access door is insulated with 1″ TUFF-RTM polyisocyanurate and is perfect for large openings in walls & ceilings. For an even more versatile option our WB AL 4000 Series Aluminum Door is an excellent option for a lightweight exterior access door with a 3/4″ polystyrene insulation that works well for both exterior and interior uses where corrosion and moisture is a factor.