UL Fire-Rated certified

UL Fire-Rated

NAAMM HMMA Compliant certified

NAAMM HMMA Compliant

Double Rabbeted Door Jambs

Discover durable hollow metal double rabbeted door jambs and frame assemblies engineered for commercial construction. Available in 16 to 12 gauge steel with fully welded or cut-and-notch knock-down configurations, these profiles support standard doorways, double egress openings, lead-lined radiation shielding, and UL fire-rated commercial life safety requirements.

Hollow Metal Door Frames (Welded & Cut-and-Notch/KD)
Engineered Openings (Sidelite, Transom & Window Frame Assemblies)
UL Fire-Rated Hollow Metal Doors & Frames
Lead-Lined Frames

Our Range of Products

Hollow Metal Door Frames (Welded & Cut-and-Notch/KD)

Hollow Metal Door Frames (Welded & Cut-and-Notch/KD)

  • Welded or cut-and-notch KD assembly options
  • UL fire-rated frames for life safety compliance
  • Quick-ship lead times of 5-7 business days
Engineered Openings (Sidelite, Transom & Window Frame Assemblies)

Engineered Openings (Sidelite, Transom & Window Frame Assemblies)

  • Glazed or paneled sidelite and transom options
  • NAAMM/HMMA compliant UL fire-rated construction
  • 16 to 12 gauge steel thickness available
UL Fire-Rated Hollow Metal Doors & Frames

UL Fire-Rated Hollow Metal Doors & Frames

  • Multiple core options including temperature rise
  • One-year warranty on doors and frames
  • Same-day to 10-day quick-ship lead times
Lead-Lined Frames

Lead-Lined Frames

  • Lead-lined construction for radiation shielding
  • Fully finished or cut-and-notch delivery formats
  • Direct job site delivery via dedicated fleet

Frequently Asked Questions

What steel gauges are available for hollow metal door jambs?

Hollow metal door jambs and frame profiles are manufactured using steel thicknesses ranging from 16 gauge to 12 gauge, with select door product lines accommodating up to 18 gauge. This range ensures structural durability across light commercial, heavy commercial, and high-traffic egress installations.

Are double rabbeted door jambs available knocked down or welded?

Can double rabbeted door jambs accommodate UL fire ratings?

What lead times can be expected for custom door frames?

Are specialized configurations like lead lining available for these frames?

What material options are used for commercial hollow metal frames?

Can double rabbeted jambs be engineered for transom or sidelite openings?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Commercial Building Construction

Commercial Building Construction

Heavy-duty 16 to 12 gauge frames engineered for standard commercial doorways, double egress, and pocket door openings.

Healthcare and Medical Facilities

Healthcare and Medical Facilities

Lead-lined frame profiles designed for radiation protection in hospital X-ray rooms and CT scan installations.

Fire Safety and Egress Systems

Fire Safety and Egress Systems

UL fire-rated frame assemblies meeting strict life-safety compliance for stairwells and rated commercial corridors.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Commercial Door Distributors Choose Custom Metal Products

Versatile Frame Configurations

Select from 16 to 12 gauge steel in standard profiles, kerfed frames, double egress setups, and fully finished welded or knockdown cut-and-notch options.

Fast Reliable Lead Times

Keep projects moving with standard frame lead times of five to seven business days, alongside select quick-ship programs and direct job site delivery.

Certified Code Compliance

Meet commercial life safety and shielding demands with UL-labeled fire-rated frame constructions built in compliance with rigid NAAMM HMMA standards.

Request a Quote on Custom Double Rabbeted Door Jambs

Submit your opening schedules and specifications to receive an accurate pricing quote and lead-time estimate from our commercial sales team.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (866) 893-3338. You can also send us a quick email at info@custommetalproducts.bz.