BT Fiberglass Box Trailer. Dry and solid has Good tyres. This trailer is advertised on other sites and locally so I reserve the right to end early. The item “BT Box Trailer” is in sale since Tuesday, March 10, 2020. This item is in the category “Vehicle Parts & Accessories\Car Accessories\Trailers & Towing\Car Trailers”. The seller is “liriprescot0″ and is located in Norwich. This item can’t be shipped, the buyer must pick up the item.