Specifications include, but are not limited to: A. The gravel/sand barrel impact attenuators offered by the bidder shall be on the current INDOT Qualified Materials List for Impact Attenuators which is in effect at the time of the bid opening or have been approved by INDOT in writing prior to the bid opening date. A copy of the current Qualified Materials List for Impact Attenuators may be found at: https://www.in.gov/indot/div/mt/appmat/appmat.htm yes no B. The gravel barrel container shall be yellow in color. yes no C. The lid shall be black in color. yes no D. The units bid shall be U.V. and weathering degradation resistant and under warranty. yes no E. Each module shall be bid as a complete unit for the 200 lb., 400 lb., 700 lb., 1400 lb., and 2100 lb. yes no F. Replacement parts shall be offered for each complete module bid if applicable. yes no