DURABLE Click Sign, 4-1/8 x 5-7/8 Inches, Graphite (486137) Click Signs can be updated instantly whenever tenant, faculty or staff changes occur Easy-to-open acrylic window allows for updating messages in seconds with regular paper Available in 3 sizes, each sign includes screws and anchors for wall mounting and adhesive pads for mounting to glass Create new inserts with Durable's free online software. Printable micro-perforated replacement insert packs (DBL4851-02) sold separately