The RK6000 Collection

Architectural Flush 3-Ply Doors, for commercial and high-end residential applications

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The RK6000 Collection takes the traditional “hardboard” door to a new level – a premium grade solid core door manufactured for ultimate strength and durability, built to last a lifetime.

Key Features


Custom sizing based on your door schedule

Various core options available

High density particleboard core standard, LSL core, lightweight core, or honeycomb core available

Design flexibility

Add custom grooves/inlays and lite openings

Fire ratings

20 minute fire rating available (design restrictions apply)

Infinite hardware machining capabilities

Leverages our state-of-the-art CNC machinery

In-house finishing options available

To match your desired color finish

FSC/LEED Certified options available


  • Minimum 3” structural composite lumber top and bottom rails
  • Structural composite lumber inner stile reinforcement
  • Solid hardwood edging
  • HDF faces (high-density)
  • Customize door construction based on your needs
  • Manufactured with premium North American materials only

The Competition

  • 1” top and bottom rails
  • No inner stile reinforcement
  • Laminated edges
  • MDF faces (medium-density)
  • Customized door construction not available
  • Manufactured with international materials

The Collection

Paint Grade HDF

Primed HDF

Factory Painted HDF

Custom work is our speciality.

RK Doors is able to source specialty, reconstituted, and engineered veneers for your project. Sketch face capabilities are also available. Contact our door experts to get started!


Product specification sheet


Grooving and lite door styles


Give us a knock and we’ll be happy to help.

Get in touch with us today and let’s build your dream doors together.

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