Galvanized steel straigth branches 90°, with rubber sealing. The airthightness class is also determined by the mounting on the construction site.
Connection pieces until Ø200
with airthightness class D to EN 12237, connection pieces bigger than Ø200 with
airthightness class C to EN 12237 The airthightness class is also determined by the mounting on the construction site.
Explanation :
APG = Branche type
250 = Diameter of branche