The ultra-modern Roof Pyramid / Lantern is one of the slimmest designs on the market today, providing more light transmittance than most. Traditionally, other companies use bars which makes them bulky and obtrusive and U values are also effected, making ours more efficient and aesthetically pleasing. Consisting of glass to glass joins with thermal foam barrier using a glass of just 1.0 U value the product will keep you warm even in the harshest of conditions. Along with Solar reflective self cleaning glass, it keeps the suns UV rays down to a minimum.