Diameter: ø80 – ø1000 mm.
Galvanised branch pieces are made of 0.90 mm sheet metal.

When supplied with loose flanges, [f.b.m.fl], L1 is extended by 2 x 50 mm.

State A-, B- and C dimensions when ordering.
Options are limited by A = C, and A ≥ B.
A = C must be max. 1000 mm.

The branch determines the length of L1.
Branch pieces are always straight with the branch centrally located.

L1, L2 and L3 can be calculated using the stated formulas.