Inlets and inlet doors

Tunnel Inlet Door Systems
Tunnel inlets help to eliminate dead zone areas created by curtain sidewalls and curtain pockets. The single Tunnel Inlet Door comes fully assembled and an ultra lightweight, rigid laminate foam panel construction makes for easy installation. All brackets are galvanized for durability and long life. With an insulation value of R-8, theTunnel Inlet Door provides excellent energy savings compared to conventional curtain inlets. The lightweight rigid laminate foam panel construction includes a profiled rubber seal for an airtight fit. Single door tunnel inlets are available in 4′, 5′, and 6′ heights and include two color options; black for dark out conditions, and white when dark out conditions are not required.


01Tunnel Inlet Door Features:

  • Easy installation.
  • Lightweight doors.
  • Energy efficiency.
  • Low Maitenance.
  • Offered in 4′, 5′, and 6′ height.
  • End channels are pre-notched for proper, quick and easy installation.
  • Aluminum channels add rigidity to the door panels.
  • Available in two colors; black or white.

Fully assembled.


Cumberland’s Formed Rubber Seal provides an airtight seal. Molded runners make for easy alignment and quick installation.




03Over time, cords can stretch requiring tension re-adjustment. Cumberland’s Ratchet-style Cord Adjustor makes ensuring a reliable door seal a simple task.





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