48" x 80" Commercial Hollow Metal Doors – Knock-Down Frame Assembly, Premium Insulated Packages

Engineered for premium projects and long-term ROI. Our 48" x 80" commercial hollow metal door packages pair a heavy-duty steel door with a precision knock-down (KD) frame for fast, clean installation on site. Every package is manufactured in the USA using galvannealed steel and a high-performance insulated core—never cheap imports or noisy honeycomb fillers—delivering superior durability, security, and energy efficiency.

Why KD? The knock-down frame ships flat to reduce freight cost and jobsite damage, assembles quickly with crisp miters, and anchors securely to wood or metal stud walls. It’s the professional’s choice for renovations and new construction alike.

Key Benefits

• Premium Insulated Core: Energy-efficient polystyrene core for a quiet, solid feel and better thermal performance.
• USA-Made Quality: Built with pride from galvannealed steel for superior corrosion resistance and paint adhesion.
• Rust-Inhibiting Prime Finish: Factory primed and ready for topcoat—ideal for interior or exterior applications.
• Faster Installation: KD frame assembles on site; no specialized tools required, minimizing downtime and labor.
• Jobsite Flexibility: Fits wood or metal stud wall construction with multiple anchoring methods.
• Upgrade-Ready: Accepts commercial hardware, access control, vision lites, and louvers.

What’s Included

• 48" x 80" Hollow Metal Door Leaf with insulated core and factory prime finish
• Knock-Down Hollow Metal Frame (three-piece, mitered) for wood or metal stud walls
• Standard Hardware Preps:
  • Hinge prep for 4-1/2" template hinges (3 or 4 hinges based on door height and usage)
  • 161 cylindrical lock prep with 2-3/4" backset (other preps available)
  • Strike prep to match lock function
• Installation Anchors (select type at checkout: stud anchors, compression anchors, or existing opening anchors)

Popular Options

• Vision lite kits (various sizes) with tempered or laminated glass
• Louvers for mechanical or storage rooms
• ADA-compliant lever sets, exit devices, door closers, thresholds, and weatherstripping
• Access control prep (electric strikes, mag locks, power transfer)
• Fire-rated configurations (where required by code)
• Field-verified hinge and lock location matching for replacement doors

Specifications

• Nominal Size: 48" x 80"
• Construction: Heavy-duty galvannealed steel door with insulated polystyrene core
• Finish: Factory applied rust-inhibiting prime (ready to paint)
• Frame: Knock-down, 3-piece mitered frame; installs over wood or metal stud walls
• Handing: Left or right (specify at checkout)
• Use: Interior or exterior commercial applications

Ideal Applications

Schools and universities, healthcare facilities, industrial and warehouse, retail back-of-house, offices, public buildings, and high-traffic corridors that demand robust security and clean aesthetics.