Glow in the dark "no exit" sign 8" x 10"

What is for sale: Glow in the dark "no exit" sign 8" x 10"

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"NO EXIT" glow in the dark sign. 8"H X 10"W. Made of rigid PVC. Can be mounted with screws or high strength double sided tape. Uses phosphorescent (glow in the dark) pigments based on Strontium Oxide Aluminate Chemistry. Up to ten times brighter than that of conventional glow in the dark pigments. Will glow for up to 33 hours after the light source goes out. These glow in the dark signs are being installed throughout the country to assist in emergency evacuations.