15" Black Letter Wrought Iron A-Z and a-z Made of 2mm solid wrought iron with powder coated surface, for both indoor and outdoor use; WHY 15? More visibility visible in a maximum distance of 630 feet (vs 525 feet for 12 letters); WHY ADD LOWER CASE? Research shows that all-cap signs seem to scream at people while mixed-case signs are more friendly and easier to read; EVEN MOUNT pointed studs are welded to the back of letters for a more even mount; to install, please place letters where you want them to be and mark the spots of the studs; then drill holes at the marked spots and insert anchors prior to mounting; 15 upper case letters are naturally all 15 inches high, but PLEASE NOTE THAT THE 15 LOWER CASE LETTERS ARE NOT 15 HIGH - a few are higher than 15 inches but most are naturally shorter than 15; our pictures should tell the approximate dimensions, but please feel free to ask if you have questions. And these lower case letters are meant to go with the 15 upper letters if needed. Additional Details ------------------------------ Product description: 15" Black Letter Wrought Iron A-Z and a-z Made of 2mm solid wrought iron with powder coated surface, for both indoor and outdoor use; WHY 15?? More visibility ? visible in a maximum distance of 630 feet (vs 525 feet for 12? letters); WHY ADD LOWER CASE? Research shows that all-cap signs seem to scream at people while mixed-case signs are more friendly and easier to read; EVEN MOUNT ? pointed studs are welded to the back of letters for a more even mount; to install, please place letters where you want them to be and mark the spots of the studs; then drill holes at the marked spots and insert anchors prior to mounting; 15? upper case letters are naturally all 15 inches high, but PLEASE NOTE THAT THE 15? LOWER CASE LETTERS ARE NOT 15? HIGH - a few are higher than 15 inches but most are naturally shorter than 15?; our pictures should tell the approximate dimensions, but please feel free to ask if you have questions. And these lower case letters are meant to go with the 15? upper letters if needed.