Moeller Battery Box for 8D Batteries, 24.75" L x 14.88" W x 11.50" H. Polyethylene Construction. Chemical And Rust Resistant, Will Not Corrode. Constructed To Meet Cfr 177. 150 Standards. When Properly Installed, They Conform To USCG Regulations. USCG Regulations Require All Battery Boxes To Be Securely Fastened To The Deck And The Vent Opening Must Not Be Obstructed.