3070 Steel Commercial Doors

The designation 3070 is commonly used as shorthand for a commercial door size: the first two digits indicate the nominal width in feet and the last two indicate the nominal height in feet. Final fabrication details may also include handing, frame profile, gauge, core, hardware preparation, and fire-rating requirements.

The rough opening for a 3070 door is not universal because it depends on the selected frame, wall construction, installation method, and whether the reference is for a single or paired opening. Use the approved frame submittal, architectural door schedule, or manufacturer installation information before forming the wall opening.

Yes. The product range includes UL-labeled fire-rated hollow metal doors and frames for commercial building fire safety and egress applications. The required rating, core, frame, hardware preparation, and assembly details should be confirmed against the project specifications and approved door schedule.

The available gauge range is 18 gauge through 12 gauge. The appropriate selection depends on the opening requirements, expected use, hardware, fire-rating needs, and project specifications. Custom Metal Products can help identify a suitable gauge and configuration for a 3070 commercial opening.

Available core options include polystyrene, polyurethane, temperature rise, and steel-stiffened cores. Selection should reflect the project’s fire-rating, thermal, durability, and specification requirements. Temperature-rise and other rated assemblies should be coordinated with the applicable UL-labeled configuration.

Yes. The product range supports sidelite, transom, and window assemblies, along with standard and custom frame profiles. Options include arched, radius, segmented, double-egress, glazed, paneled, and lead-lined frame applications. Final dimensions and assembly details should be confirmed from the project schedule.