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.
If the wall is thicker than the jamb depth, the door trim (called casing) will not fit properly over the jambs and wall surfaces. A standard interior wall consists of a two-by-four frame with one layer of 1/2-inch-thick drywall on each side, for a total thickness of approximately 4 1/2 inches. The depth of a standard door jamb is 4 5/8 inches, which provides an extra 1/8 inch to account for slightly thicker walls due to stud size variation. Variations. While most modern homes have standard wall thicknesses, older homes often have thicker walls, as well as variation in thickness from wall to wall.