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.
Standard Inside Door Sizes. The most common width for interior doors is 32 inches. The International Residential Code does not require interior doors to be as large as the main entry door in a house, but it still sets minimum height and width requirements. Thus, most standard interior doors are the same height, and come in widths ranging from 28 to 32 inches. An interior passage door is any door that you use to move from one room to another, and the code requires these to be 80 inches in height.