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Hollow metal doors are the most widely used commercial door type in schools, hospitals, warehouses, retail buildings, and government facilities. This guide explains everything you need to know about hollow metal doors - from construction and fire ratings to frames, hardware, installation, and replacement strategies.
This page is designed for contractors, facility managers, architects, and building owners who need accurate, real-world information before ordering or repairing commercial steel doors.
A hollow metal door is a commercial steel door constructed from formed steel faces with an internal core. Unlike residential steel doors, hollow metal doors are engineered for durability, code compliance, and compatibility with commercial-grade hardware.
Hollow metal doors are commonly used where strength, longevity, fire resistance, and security are required.
Hollow metal doors are available in multiple configurations depending on visibility, ventilation, fire rating, and opening size.
Many hollow metal doors are fire rated as part of a tested door and frame assembly. Fire ratings are required when an opening is part of a rated wall, corridor, stairwell, or fire barrier.
Hollow metal doors are available in multiple gauges and core types depending on performance requirements.
Performance characteristics may include sound control (STC), thermal performance (R-value), and resistance to abuse.
Door frames are just as important as the door slab. Frame selection depends on wall type, construction method, and whether the opening is new or existing.
Learn more:Hollow Metal Door Frame Guides
Hollow metal doors are designed to work with commercial-grade hardware including locks, panic bars, closers, and access control.
Proper installation is critical to performance and inspection approval.
In many cases, an existing frame can be reused and only the door slab replaced.
Hollow metal doors can be ordered as complete packages or custom-built to match your opening.
Call 866-232-5673 or text 210-275-8966 with photos and measurements. Our team can help you select the correct door, frame, hardware, and configuration.
Whether you need a quotation or just have a question about a product. Reach out to us today by calling 866-232-5673 or text us questions and photos at 210-275-8966, and one of friendly specialists will be happy to help!
