The "Best Buy" Rooflight system boasts high-quality materials and workmanship, attractive design and proven functionality. Awarded the lightest rooflight in its class. Tinted dome. For roof thicknesses of 24 - 35mm. Large opening angle up to 60° openable. Simple and safe operation by the smooth-crank handle or latch stand. Flat structure, streamlined and noise dampening. Integrated Black Out Blind & Insect Protection System.