Energy Efficient Steel Stiffened Door (Trio-E)

With energy prices continually increasing and commercial buildings consuming almost 40% of energy usage in North America, Ceco Door remains committed to providing maximum thermal resistant solutions. The Trio-E door is steel stiffened for strength, but has achieved an operable U-Factor of 0.36 which is better than most other steel stiffened doors currently available on the market today. Many building owners spend millions of dollars a year on energy bills and the Trio-E represents a chance for them to realize significant savings on a new or retrofit project.


  • One of the lowest operable U-Factor in the industry for a steel stiffened door  (U Factor .36)
  • First steel stiffened hollow metal swinging door to qualify for GreenGuard Gold


  • Steel stiffened core for added strength and durability
  • Hurricane rated up to +/-100 psf 3’0” x 7’0” single and up to +/-70 psf  8”0” x 8’0” pairs


  • No vertical weld marks on door face sheets so aesthetically pleasing gloss paint can be applied 
  • Many door designs and prefinish color options available

Winner of the 2013 Award for Design Excellence

Read the press release here for more details.