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Recessed Mount Edge Lit Led Exit Signs - A Stylish, Edge Lit Led Exit Signuniversal Mount Led Edge Lit Exit Signs Have Compact, Low-profile Designenergy Consumption Of Less Than 5 Watts For Battery Backup Unitsemergency Battery Backup Model Is Completely Self-contained Infield Installation Directional Indicators. Premium Grade Extruded Aluminum Housing. Ac On Indicator Light And Test Switch. Ni-cad Battery. 120/277 Volt Operation. Solid State Electronics And Charger Board. Uv Stabilized Ultra Clear Acrylic Panel. Premium High Output Ultra Bright Led's. (71330-71337) Single Side Legend Only(must Purchase Double Sided Face Plate Separately). (71412-71417) Double Sided Fixtures Have A Mylar Separator In Center So You Only See Exit From One Side. Ul Listed.