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.
Hardie Board Siding Costs & Prices. Hardie board siding costs ranges from $5.00 to $10.00 for materials and professional installation. Hardie board, or HardiPlank (the official product name), is the most popular fiber cement product.Discover the cost breakdowns for materials and installation, as well as actual customer costs. âHardie Board siding cost per square foot range from $5 to $10 installed.The reason for the large price range is due to the fact that materials and installation requirements vary so much from project to project.â.ost Of HardiPlank: $1.00 â $1.50 psf. Although this is the per square foot price, most fiber cement products are sold by the panel.