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Your cart is empty.3 Series 3020-A glow-in-the-dark/ultra reflective letter. These highly visible markers are ideal for clearly identifying electrical utility equipment such as electrical boxes, pedestals, transformers and utility poles. The letters is also optimal for facility identification and general purpose marking such as aisles, equipment, shelving and bins. Average Outdoor Durability Up to 12 years outdoors (average expected outdoor life of product will depend on user definition of failure and climatic conditions). Brady B-309 is used for general labeling; designed for permanent applications indoors as well as severe outdoor environments. Special acrylic adhesive adheres strongly, making marker removal difficult. The photoluminescent boarder gives the character distinct definition in blackout conditions. Illumination characteristics are 21.6 lux (2 foot-candles) for 2 hrs with a 4100K cool white fluorescent lamp. Luminance (after illumination) are 10 minutes graterthan 29 mcd/m2, 60 minutes graterthan 7 mcd/m2, 90 minutes graterthan 5 mcd/m2, 120 minutes graterthan 3 mcd/m2. Pressure sensitive acrylic adhesive, reflective sheeting substrate, standard material color is silver, standard legend color is black with photoluminescent border, Exceeds application requirements of Type III and IV per ASTM - D 4956 relevant standard. Properties of adhesive are Adhesion to Steel (PSTC-1), 15 Minute Dwell (Average.) destroys, Ultimate Dwell (72 Hours.) (Average.) destroys. CS17 wheels, 1000g. weight and Legend withstands 334 cycles, abrasion resistance (Method 5306 of U.S. Federal Test Method Std. No. 191A). 60 degree gloss on reflective area - 92 Gardner gloss units. Measures 3" width by 6" height. Material type is high intensity prismatic reflective sheeting. Color is Black, glow-in-the-dark border/silver. Character height is 5".