SHARON, MASS. — 1-800-PACK-RAT LLC has signed a lease for 40,000 square feet at 31 Commercial St., an office and warehouse facility in Sharon. The company is a portable storage container and moving company. Cathy Minnerly and Ovar Osvald of NAI Hunneman represented the landlord, Suffolk Advisors, in the transaction. Colliers International represented the tenant.