Posting temporary notices for employees, customers, special events, sales, opening/closing hours and more no longer needs reliance on cellophane tape, masking tape or similar stickums that leave messy residue on glass walls, doors and windows when the event is over. Separate notices easily slip into the crystal clear AdirOffice Suction-Mount Acrylic Window Sign Holder to reach incoming and outgoing patrons and personnel with relevant messages. Though firmly attached to glass surfaces with its four suction cups, the sign holder is easily lifted up and off to clean glass behind the sign support.