A = ≈ 90 mm
B = ≈ 4,2 mm
For inner-duct diameters from 71 up to 315 mm.
CAUTION: Diameters above 315 mm only suitable for very sturdy. Tightness and stability cannot be guaranteed.
The unique Allen screw (M6) to be tightened shortens the assembly times drastically. Easy disassembly (unlike the plug-in system).
On a 100 mm Ø plain duct the necessary force to pull the connection apart is ≈ 1100 N (humidity and dirt can negatively affect these values). When installed vertically, each duct segment must be individually fixed and secured.