The grooves are actually meant to provide more contact on the glass when poling over a certain height
In my opinion it doesnât make a huge difference against the frames it does help in the corners.it doesnât make a huge difference like how the moreman liquidator claims to do
Yes and Iâve also noticed when using a very wide channel, 30" or wider, having the rubber in an upper slot helps with the pole work. Or on very large plates of glass due to its waviness.
2 Likes
