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New U.S. Aluminum High Performance Thermal Entrance Doors Offer Low U-Factors and a High CRF Rating

Series 650-T, 700-T, and 750-T Thermal Doors are Excellent Choices for Warm or Cold Climates, or Whenever Energy Conservation is Key.

LOS ANGELES, CA March 28, 2013 U.S. Aluminum is now offering a door trio- the 650-T (narrow stile), 700-T (medium stile), and 750-T (wide stile) High Performance Thermal Entrance Doors- that offer excellent thermal performance when ordered with optional foam insulation.  Thermally broken, these doors have very low U-Factors ranging from 0.57 to 0.31. They are ideal choices whenever energy conservation is required.




650-T, 700-T, 750-T Highlights:

  • Thermally Broken Doors with Optional Foam Insulation Provide Extremely Low U-Factors Ranging From 0.57 to 0.31 and Higher CRF Rating
  • NFRC Rated
  • Includes Glass Stops for 1" (25 mm) Glazing With Optional Glass Stops for 1-1/2" (38 mm) Triple Glazing
  • Choice of Standard or A.D.A. Access Bottom Rails
  • Lifetime Warranty on Mechanically Fastened and Welded Corner Construction
  • Concealed Adjustable Leveling Screw for Minor Variances in Door Openings
  • Adjustable Spring-Loaded Dual Weathered Thermally Broken Astragals Provided with Each Pair of Doors
  • Interior and Exterior Door Sweep Provided with Each Door


Poly-AluminizerTM and Lancer Method Thermal Break Technology


The Poly-AluminizerTM and Lancer methods mechanically modify the aluminum extrusion, effectively improving the bond between the polyurethane polymer and the aluminum cavity producing a mechanical bond.  The Lancer process provides mechanical surface conditioning of the extrusion to ensure proper adhesion.

Fill and Debridge- Structual Integrity and Thermal Performance



The polyurethane in the channel is rigid and debridged across its entire length, maintaining its structural integrity while providing the benefits of thermally broken framing.

The Series 650-T, 700-T, and 750-T High Perfomance Thermal Entrance Doors can be seen at, and the CRL14D catalog.

The DC14 Door Controls Catalog
provides up-to-date product information to select the proper hardware for all types of doors and building types.


For questions or for any type of support regarding U.S. ALuminum Doors and Entrance Systems contact (800) 421-6144 in the U.S., (877) 421-6144 from Canada, or (323) 588-1281 International, extension 5305 or by email at

C.R. Laurence, headquartered in Los Angeles, California, is a worldwide manufacturer and supplier of glazing, architectural, railing, construction, screen, industrial, and automotive supplies.   CRL serves its customers through an international network of C.R. Laurence service centers located throughout the U.S., Canada, Europe, and Australia.  U.S. Aluminum, a subsidiary of C.R. Laurence, serves its customers through a network of serice centers in the U.S. and Canada.  The principal CRL ecommerce web site is  In addition, serves the architectural community with a full selection of architectural hardware systems, and is an up-to-date resource for the U.S. Aluminum product line.


Press Contact:
Greg Rewers
Vice President of Marketing
(323) 584-5216
C.R. Laurence
2503 E. Vernon Ave.
Los Angeles, CA  90058

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