Mardome Trade Double Skin Opening Rooflight Textured Mardome Trade is the standard specification dome unit in the Mardome dome rooflights range. Providing stylish, contemporary looks as standard and excellent insulation, triple skin Mardome Trade rooflights achieve a centre pane U-value of 1.8 W/m²K with options to reduce Ud-value to as low as 0.95W/m²K.  The Mardome Trade Double Skin Opening Rooflight offers a sleek and stylish solution to those wishing to add more light and air to a dark and dingey space. This product comes with a low rise aerodynamic glazing unit, as well as super easy and fast installation. There are many options when it comes to ventialtion and light transmittions, as well as options to reduce outside noise. The Mardome Trade Double Skin Opening Rooflight comes with a tapered kerb foot, which elimates the need for timber fillets. When it comes to the electric windows, all cabling and actuators are hidden within the kerb, making the Mardome Trade Double Skin Opening Rooflight more aesthetically pleasing. The risk of condenstation has also been minimised thanks to a constant seperation of glazing skins across the full width of the dome. The steep kerb walls allow for a larger glazing unit, resulting in much more beautiful natural daylight. The Mardome Trade Double Skin Opening Rooflight is the perfect product for those looking to add tonnes of natural light to any room. Designed with features to ensure quick and easy installation Mardome Trade is the first choice roof dome for flat roofs with a range of added extras to choose from including kerb options to suit every new build or refurbishment project. Product Specifications  Sleek, contemporary aesthetics inside and out with aerodynamic low rise glazing unit  Optimum thermal performance as standard with U-value of 1.8W/m²K and options to reduce this to 0.9W/m²K  Constant separation of glazing skins across full width of dome including fixing flange avoids cold spots and minimises the risk of condensation Extensive options to satisfy acoustics, ventilation and light transmission  Multiwall PVC kerb in standard and tall options  All cabling and actuators hidden within kerb on mains powered opening units  Steep kerb walls allows larger glazing unit meaning more natural daylight  Tapered kerb foot facilitates easy application of roof covering and eliminates the need for timber fillets Available in standard sizes from 450x450mm up to 2400x1800mm  Acoustics Pack where a reduction in rain or external noise transmission is required (not available with ventilated or opening domes)