BenchmarksProSales 100 Survey Share Email Article Share on LinkedIn Share on X Share on Facebook The 2019 ProSales 100 Most Popular Products Displayed in Dealer Showrooms Windows and doors are the most showcased items. By PROSALES Staff May 20, 2019 The majority of pro dealers (80%) have a showroom. Of those, nearly all (about 94%) display windows and doors, 83% offer decking and railing products, as well as millwork, and 81% have siding and exterior trim in their showrooms.