The cornea and lens in the eye act as the camera lens. The retina is similar to the film. If the image is not focused properly, the film (or retina) receives a blurry image. The cornea also serves as a filter, screening out some of the most damaging ultraviolet (UV) wavelengths in sunlight.
Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
As compared to a vinyl product of similar cost the cost with installation should be 40% to 50% higher. According to my James Hardie sales rep, the national average for contractors who install Hardie Plank is $900 to $1,000 per square including soffit and trim.ardie pricing is based on the exposure. It takes the same amount of time to put on a 4 exposure piece as it does a 8 exposure piece. Therefore we pay $12 per piece of hardie which is $3 per square foot for 4 exp. and $1.5 per square foot for 8 exposure.