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Commercial Doors

Premium doors, frames, and hardware in MA, ME, CT, and NH

NE Gypsum and Robert Karpp

For more than a decade, builders, contractors, and construction professionals in Maine, Massachusetts, Connecticut, and New Hampshire have known that when shopping for doors in New England, there are two standout options:

New England Gypsum (NEG) – serves residential and commercial construction customers through its building supply yards across New England (Hartford, CT; South Portland, ME; and Manchester, NH).

Robert N. Karpp Company (Karpp) – serves commercial and residential builders through its construction materials yards across Massachusetts (Abington, Attleboro, South Boston).

Together as part of the GMS family of companies, unified in a commitment to exceptional customer service, the combined reach and resources of NEG and Robert Karpp brings you:

New England’s Finest Door/Hardware Selection

From our NE construction yards, New England Gypsum and the Robert N. Karpp Company offer customers across CT, MA, ME, and NH a complete selection of commercial doors, frames, and hardware.

Doors for Nearly any New England Building Project

Whether you need a single door, or multimillion-dollar packages of doors for large-scale commercial or mixed-use construction projects, we’re here to help. NE Gypsum and Robert Karpp Company provide quality doors and door hardware for:

  • Retail and industrial buildings
  • Water treatment facilities
  • Schools and colleges
  • Hospitals
  • Office fit-outs
  • Auto dealerships
  • Military and VA facilities

Quality and Variety – Buy Doors from NEG & Karpp

Choose from our complete selection of quality door solutions, as well as a full line of Division-10 products, including:

  • Hollow metal doors and frames
  • Architectural grade wood doors
  • Stile and rail wood doors
  • Fiberglass doors and frames
  • Interior aluminum doors and frames
  • Pre-hung doors
  • Fire-resistant doors
  • Bathroom partitions and accessories
  • Finish hardware
  • Welded & knock-down frames
  • Ballistic doors

Please note: We do not currently sell overhead doors, aluminum storefront materials, or windows.

New England’s Best Doors from the Industry’s Best Brands

At New England Gypsum and the Robert N. Karpp Company, you’ll find doors and door hardware products from every major manufacturer, including but not limited to:

  • ABH® Hardware
  • Allegion™
  • Algoma Wood Doors
  • Air Louver Vision Kits and Louvers
  • American Partitions
  • Assa Abloy
  • Apex Doors and Frames
  • ASI® Washroom Equipment
  • Best® Hardware
  • Bobrick™
  • Cal Royal Hardware
  • Corbin-Russwin® Hardware
  • De La Fontaine Industries
  • DonJo Hardware
  • Dorma Hardware
  • Falcon® Hardware
  • Graham Wood Doors
  • Hadrian® Toilet Partitions
  • Hager® Hardware
  • Harring Doors
  • LCN® Door Closers
  • Lambton Doors
  • Masonite® Doors
  • National Guard Products
  • Norton® Door Closers
  • Pemko
  • Philipp Manufacturing
  • Precision™ Hardware
  • Rixson® Hardware
  • Rockwood® Hardware
  • Schlage® Hardware
  • Stanley® Hardware
  • Special-Lite®, Inc.
  • Steelcraft® Doors & Frames
  • TruStile® Doors
  • USA Wood Doors
  • VT Industries
  • Von Duprin® Hardware
  • WGM Glass and Mirror
  • Yale® Hardware

Doors Delivered to New England Jobsites (MA, ME, NH, CT)

New England Gypsum and Robert N. Karpp Company deliver! That’s why when you have doors, frames, or door hardware delivered directly to your commercial or residential worksites in Massachusetts, Maine, Connecticut, or New Hampshire, you can rely on us to also provide:

  • Exactly the products and accessories you need for your local building projects
  • Full stock and scatter delivery service within 90 miles of our yards
  • Pre- and post-delivery jobsite inspections to ensure product quality
  • Access to our complete line of construction supplies
  • A company-wide focus on safety and regulatory compliance for all employees

Call us or visit one of our construction yards in New England today.

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About Us

We have one simple pledge: to get the right products into customers' hands all across New England, as quickly and safely as possible.

Our Services

NEG and Karpp carry and deliver a full range of commercial and residential construction supplies from the best brands in the business.

Our Locations

Our delivery fleet is dispatched several New England construction yard locations including Hartford, CT; South Portland, ME; Manchester, NH; and Abington, Attleboro, and South Boston, MA.

Contact Us

For more information about how to contact us, visit our Find a Yard page. Or click the Contact Us tab to send us an email.