[Trailer Trash 2]

I have the stock aluminum frames and this is my two cents worth on duel, frameless, or aluminum frames. most of the heat and cold is transferred through the aluminum frame into the RV far more than what goes through the glass on Duel pane or single pane, I can sit next to my windows on a hot day and the heat that comes through the aluminum is staggering I can hold my hand on the glass and leave it there but that wont happen to the aluminum frame you will draw a blister if held on there too long, the same with cold except no blister just frost bite. HA.
I believe that the new frameless windows should work better in cold or heat, being there is no heat transfer through the aluminum frame not all will be stopped but a very big percentage will be.
spending extra money for duel pane windows in my book is a waist of money.