THIS BASE HAS 15 FACTORY INSTALLED NUTS IN THE WOOD these embedded nuts are used to hold the housing onto the base MADE FOR THE MDJB OR MDJE MARINE GENERATOR --BASE ONLY, EXPECT SCRATCHES, Generator sound shield 1" thick marine plywood base only. been in storage for 30 years. You get the the wood base. Please expect there to be small dents, blemishes, scratches THIS IS NEW OLD STOCK BUT I AM SELLING AS USED, NO RETURNS PLEASE. The literature states that it is designed for marine diesel units MDJB (begin spec J ) and MDJE series generator sets. BASE BOARD IS 23.5" X 39" X 1" Unit has been in storage for over 30 years and may show a few blemishes, dings and scratches. the base is 1" thick painted and (maybe) marine grade plywood. Please calculate your shipping and handling cost. Most items are sold "AS IS" with a "no return policy" unless stated otherwise in the body of the ad. I have always treated my customers with the utmost respect and will answer all emails to the best of my ability. Thank you. Mike