31 mh � altg � com Dock & Door Alta Material Handling offers the nations leading brands of Loading Dock Equipment to complement our material handling service and offers our customers a seamless transition with one vendor for their Commercial Overhead Doors From state of the art high performance roll-up doors to sectional, TKO, and high speed doors, we provide solutions to accommodate all needs � Delivering a high-quality, cost-effective product is our standard and that is why Alta Material Handling has been Dock Seals & Shelters Quality materials and heavy duty construction is featured in all of our dock seals and shelters �