Car Subwoofer Boom Box ?

car sub-woofer boom box hand made, 18mm MDF rock solid, vented enclosure for maximum bass u cant find this type of box in market, it is custom made, glass fibre coating inside and outside to make it rock solid one hole is 10inches and the other hole is 12inches collection only as this box weighs more than 15KG if suitable amp and woofer being used, this box will shake every piece around it.