R4a em.dome Rooflight, Polycarbonate Triple skin Diffused with PVC 80mm vertical collar, electrically opening to suit internal curb size of 500 x 1100 mm and to suit maximum external curb size of 750 x 1350mm. Units to incorporate: Aluminium Cowl; PVC Opening Frame; Electrical actuator 240V AC capable of opening to 400mm.
