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Old 05-16-2013, 02:24 PM
2010Prostar197's Avatar
2010Prostar197 2010Prostar197 is offline
TT Enthusiast
Join Date: May 2009
Boat: 2010 Prostar 197
Location: East Central Illinois
Posts: 274
If I measure where the tube and main channel come together it measures about 4.5 inches.

In my picture the black winch cover (on the right side) and then straight down is the main tube which is 4.0 inches.

Never heard of 4.5 inch channel but I guess it's possible. The bigger trailers use the 5.0 inch tubing. Side to side is 3.0 inches on mine
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