"DOMETIC HEKI MIDI Rooflight 700x500 with Wind Up Crank handle Version and Without Ventilation. Suitable for Motorhomes.Roof window with crank, white, with ventilation, 700 x 500 mm Open up your vehicle to fresh air and light! This upgraded version of the Midi Heki Style roof light has improved safety features, aerodynamics, appearance and maintenance. With well-proven benefits such as the darkening blind and fly screen and variably adjustable opening positions. Cut out 500 x 700mm. Weight 8.4kg. Possible roof thickness 25-60mm Max. Opening angle 60 degrees." ?