Many of our storefront systems are impact tested and utilize either our MegaThermÂ®, or ThermaBond PlusÂ® thermal barrier technology to improve performance and enhance occupant comfort. All YKK AP products are manufactured, finished, and inspected for quality in our environmentally certified, state-of-the-art facility in Dublin, GA.
A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian). Mils are used in adjustment of firearm sights by adjusting the angle of the sight compared to the barrel (up, down, left or right).
Mils vs. Microns. Mil - A unit of measurement in the English system that is measured in thousandths of an inch. (i.e., .001 = one thousandth of an inch or 1.0 mil) Micron - A unit of measurement in the metric system that is equal to one thousandth of a millimeter. The M-Shop uses only the English Imperial/US system (inches, feet, etc.). All measurements taken in microns must be converted to thousandths of an inch.