Orbit ESN-B-R-2-20 Self-iluminating Tritum Exit Sign Black Housing Red Fp 2f 20 YrsOrbit ESN B R 2 20 ESN B R 2 20 Product Description Orbit ESN B R 2 20 Self iluminating Tritum Exit Sign Black Housing Red Fp 2f 20 Yrs Specifications: Category: Exit Signs Full Technical Description: Tritium Powered, Self Illuminating Type; 12 3 4 Inch L X 1 Inch W X 9 Inch H Size; Black Finish; UL Approval; Wet Location Application; Surface Mounting; Non Radioactive, Non Explosion Proof; Double Face(S); Stencil, Left Arrow, Right Arrow Face Type;