The easy way to distinguish between Rohn 20 & 25 is the number of
diagonals. Six for 20...seven for 25.
Also, as K8WK noted, 25 is much heavier than 20.
Even though they will stack/bolt together, they are not equivalent...the
difference in strength is considerable.
Rohn 20 is not without it's uses...small loads at low heights. If you
stack it tall with big aluminum, it will visit you in your bedroom some
windy night!
73...Don, K9NR
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