Nanotextured Surface Dramatically Improve Solar Cell Efficiency. The Engineer posted on January 22, 2015 | | 4074 views. Reducing the amount of sunlight that bounces off the surface of solar cells helps maximize the conversion of the sun's rays to electricity, so manufacturers use coatings to cut down on reflections.
The main entry door must conform to IRC specifications. Exterior doors often are the most visible parts of a house and like interior doors, are available in standard sizes. They range in width from 2 feet to more than 3 feet, and in height from 6 feet, 8 inches to more than 8 feet. Standard thickness is 1 3/4 inches.
A thickness of 1-3/8 inches is standard for interior doors, while 1-3/4 inches is standard for exterior doors. Note the hardware's required bore hole size â the diameter of the hole in the door. Replacement hardware needs to fit your door, and hardware for a new door requires a hole saw in the correct size. Typically deadbolts need a bore hole 1-1/2 or 2-1/8 inches in diameter. Levers and handlesets usually need a hole 2-1/8 inches in diameter.