Check out these helpful tools below:
Basco Shower Door: http://www.bascoshowerdoor.com/trade-pros/default.aspx
Kohler Pro: https://kohlerpro.kohlerco.com/irj/portal/pro/
Moen Pro: http://pro.moen.com/?source=moen.header.pro
Kohler Remodeler: http://www.us.kohler.com/us/Remodeler-Learn-More/content/CNT110700009.htm