Calder Door and Specialty Co, a Miner Ltd Company enjoys a long history within Central Pennsylvania, specifically Lancaster County since 1897, serving both residential and commercial customers garage doors, openers, entry doors, dock doors, dock equipment, dock seals and hollow metal man doors. The company was recently purchased by Vigor Group, LLC and joins our family of companies, Central State Door Service and Allison Door Sales. The company now serves more than 100,000 customers within Central Pennsylvania.