When I was looking acrylic dome skylight for my home's kitchen and bedrooms, then my friend did suggested hemispherical company and he told me that this is the best and reputable company for acrylic, plastic and perspex products. So I bought an acrylic dome skylights on this company with great discount. After using them, I have to say that their product's qualities are much better and more excellent than other company's material. The best thing that this company is a free of shipping charges.