balcony and terrace drain DN50/75 with ball-joint outlet (for horizontal and vertical use), CeraDrain collar, frost- and drought-proof flap seal, cut-to-size plastic extension 0 - 53 mm with stainless steel frame round d 133 mm and stainless steel plate d 112 mm. Comes with lot cover. CeraDrain - the ultimate solution for 'thin bed' waterproofing. The polymer concrete collar lies flush with the screed and the steel mesh limits differential movement between the screed and the drain. A glass fibre mat, bonded to the top of the collar acts as reinforcement at the critical point between the screed and the collar. Height adjustable levelling legs (sound absorbing) provide millimetre-accurate adjustment.