Green-yellow photoluminescent double sided sign for signaling where escape routes can be found. The photoluminescent afterglow remains up to 15 h after having been fully charged by light. The sign has holes in each rounded corner for screwing onto the wall. REF 1750 includes an adhesive sign clip, which can be used for mounting of the sign pointing out from a wall or hanging down from the ceiling. Size: 20cm x 20cmREF 1750 comes with an adhesive sign clip, which can be used for mounting of the sign pointing out from a wall or hanging down from the ceiling. Size: 20cm x 20cm