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.
Check the Exterior Door Rough Opening. The exterior wall is slightly out of plumb with a 1/4â³ outward lean as checked with a 5 foot long spirit level. This means that setting the new fully against the rough opening flush with the wall will also cause the door to lean and swing to the closed position if not held open.