Window Covering Association of America. This logo is for our CERTIFIED WINDOW TREATMENT WORKROOM certificationLogo Design Contest Logo Design Contest Contests / Window Covering Association of America. This logo is for our CERTIFIED WINDOW TREATMENT WORKROOM certification Window Covering Association of America. This logo is for our CERTIFIED WINDOW TREATMENT WORKROOM certification has selected their winning logo design. For $350 they received 150 designs from 20 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by Elemental Design Return to Contest Return to Contest Withdrawn New #42 Discussion No comments yet.