ABM Window Cleaners American Building Maintenance 1617 South Jackson Street Seattle, WA 98144   With contract negotiations complete, the 2007-2010 SEIU Local 6 / American Building Maintenance Company of Seattle Window Cleaners Agreement is available to SEIU Local 6 members working as a Window Cleaner for ABM. We would be happy to send you a copy if you call (206) 448-7348, or you can request a copy by filling out the form on this Web site. Also, when you move, please don't forget to notify your union of your new address and phone. You may call us at (206) 448-7348, or you can fill out our handy online form.