History of Mastell Brothers Founded in 1988, this family owned business is now guided by Rick Mastell. We have a full service, rental and sales center in the north metro of Minneapolis and St Paul, Minnesota. We also have the largest trailer repair center in Minnesota. We are a certified supplier in the trailer and tank trailer lines noted below and have financing solutions available. Our customers have confidence in Mastell Brothers because we have faithfully delivered friendly, on-time service and competitive pricing. We also offer dependable rentals, quality used trailers and parts, build to order options and quick resolution to all your questions or concerns. We find this customer focus by our dedicated team keeps our customers coming back to Mastell Brothers year after year.