Mini Heki Plus (without fixed ventilation) for roof thickness 43-60mm SKU : 9104100250 (0 Reviews) Review this item Mini Heki small and smart rooflight (without fixed ventilation) designed for installation in standard-sized dome lights (400 x 400 mm). Rooflight opens in three positions: completely open; half open and bad weather position. No water can splash inside when positioned in bad weather position. Prices are available to approved trade customers only, if you have an account you can log in below. Login Or you can REQUEST AN ACCOUNT here.