3M Engineer Grade Prismatic Reflective Sheeting 3430 White, 18.25 in x250 ydGeneral Information Brand 3M Country Of Origin United States Sold As Roll Lead Time 5 days California Residents Proposition 65 Warning Return Policy NCNR Non Cancellable Non Returnable Dimensions and Specifications Overall Length (Imperial) 250 yd Overall Length (Metric) 228. 6 m Overall Width (Imperial) 18. 25 in Overall Width (Metric) 463. 55 mm Width 18. 25 in 463. 55 mm Height 0. 01 in 0. 25 mm Length 9000 in 228600 mm Volume 1642. 5 cubic inch