1.75" OD Velocity Stack
from 6061 aircraft quality aluminum. This
is designed specifically for either of our
plenum materials and our 1.75"
OD 6061 Aluminum tubing
. Designed like
the rest of our velocity stacks in the fact
that all you need is a 3" hole saw to
install these. These are made to key to the
bottom of the plenum material and allow for
seamless joints both at the top of the stack
and base where the runner begins.