Thinline ‘Hidden Track’ available with NFRC Labels

Western Window Systems is excited to announce that our 600 Series Thermally Broken Multi-Slide Door utilizing our Thinline Sill (or “hidden track”) has recently passed AAMA testing for structural integrity and also for air infiltration. By meeting both of these requirements, Western now has the ability to offer our customers these door systems with our popular track and also provide NFRC labeling.

These Multi-Slide Doors will outperform the minimum specifications of the 2009 IECC Energy Code and the NFRC labels will display these important values:

Now even the most energy conscious architects, builders, and homeowners have the freedom to open up entire walls of their homes with a door track system that nearly disappears. Just imagine the possibilities…