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Your Family-Owned Partner in Building

Ten companies, three regions and one family, supplying the doors, windows, stairs, millwork and appliances that go into homes and buildings across the country.

Meet our companies Join our team

Serving LBM Dealers, Homebuilders, General Contractors, Property Managers, and Homeowners Nationwide since 1980.

What began as a small interior door supplier in Massachusetts has grown into a leading family-owned and operated distributor of building supplies and appliances to the residential and commercial markets.

Racks of interior doors stocked in a Central Woodwork warehouse

LBM dealers

Two-step distribution of doors, windows, stairs and millwork, with the inventory, programs and delivery that keep your yard competitive.

A shingle-style coastal home with stone chimneys and Horner windows overlooking the water

Residential homebuilders

Windows, doors, stairs, millwork and appliance packages for new homes, with takeoffs, scheduled deliveries and installation support.

Open-riser stair and millwork in a commercial interior

General contractors

Commercial openings, door hardware and multifamily packages, delivered to spec and on schedule.

A row of washers and dryers in the CenWood Appliance showroom

Property managers

Appliances, doors and hardware for turnovers and renovations, with delivery and installation you can count on.

A CenWood Appliance consultant helping a customer choose a range

Homeowners

Showrooms in Massachusetts, Tennessee and Colorado to help you choose the right door, window, kitchen or appliance.

Our mission

To Deliver Exceptional Products and Services to Every Customer, Every Time.

Big enough to matter, small enough to care.

Learn more about our companies across the United States.

Appliances

2 companies

Showrooms, builder programs and delivery and installation in Tennessee and Colorado.

Mountain High Appliance(opens Mountain High Appliance website)CenWood Appliance(opens CenWood Appliance website)

Manufacturing

3 companies

Doors, stairs and custom millwork, made in our own plants in Massachusetts and Colorado.

Architectural Concepts(opens Architectural Concepts website)Captiva Custom(opens Captiva Custom website)Cooper Stairworks(opens Cooper Stairworks website)

See what each company does →

A waterfront family room with floor-to-ceiling windows looking out over the bay
Premium and custom

Built for the homes people dream about

From handcrafted entry doors and curved staircases to the pro-style kitchen, our companies supply and build for every job type, from the everyday value home to the custom and luxury market.

A spiral staircase seen from above, with a glass-globe chandelier hanging through its center

Custom stairs

Curved, spiral and floating staircases, engineered and handcrafted to order by Cooper Stairworks in Somerset.

A Captiva Custom mahogany entry door with sidelights and transom at the top of granite steps

Handcrafted doors

Custom wood entry and interior doors from Captiva Custom, alongside premium door lines from leading manufacturers.

A professional-style gas range with a griddle, pans cooking on every burner, set in a marble kitchen

Luxury appliances

Showrooms in Tennessee and Colorado featuring luxury brands such as Sub-Zero, Wolf, Thermador and Miele.

Work we’re proud of

  • Spiral staircase, Cooper Stairworks
    Spiral staircaseCooper Stairworks
  • Luxury kitchen, CenWood · Mountain High
    Luxury kitchenCenWood · Mountain High
  • Arched entry door, Captiva Custom
    Arched entry doorCaptiva Custom
  • Shingle-style coastal home, Horner Millwork
    Shingle-style coastal homeHorner Millwork
  • Professional-style kitchen, CenWood · Mountain High
    Professional-style kitchenCenWood · Mountain High
  • Great room and balcony, Horner Millwork
    Great room and balconyHorner Millwork
  • Cooktop with downdraft, CenWood · Mountain High
    Cooktop with downdraftCenWood · Mountain High
  • Floating stair, Horner Millwork
    Floating stairHorner Millwork
  • Professional dishwasher, CenWood · Mountain High
    Professional dishwasherCenWood · Mountain High
  • Double entry doors, Captiva Custom
    Double entry doorsCaptiva Custom
  • Waterfront porch room, Horner Millwork
    Waterfront porch roomHorner Millwork
  • Refrigerator drawers, CenWood · Mountain High
    Refrigerator drawersCenWood · Mountain High
  • Modern waterfront home, North Atlantic
    Modern waterfront homeNorth Atlantic
  • Oceanfront balcony, Horner Millwork
    Oceanfront balconyHorner Millwork
  • Coastal estate, North Atlantic
    Coastal estateNorth Atlantic
Our core principles

Five principles, one house

We build things for a living, so we think about our culture the same way. Pick a principle to see where it sits.

A house drawing where each part stands for one of our five principles

Tap any part of the house.

By the numbers

From a door shop in Somerset to the Rocky Mountains

45+Years family-owned and operated
10Companies and brands in the family
3Regions: New England and New York, Tennessee, Colorado
1M+Square feet of manufacturing, warehousing and retail space across North Atlantic
~90%Of our Somerset plant’s electricity comes from solar
Map of North Atlantic locations: New England and New York, Tennessee, and ColoradoAlabamaAlaskaArizonaColoradoFloridaGeorgiaIndianaKansasMaineMassachusettsMinnesotaNew JerseyNorth CarolinaNorth DakotaOklahomaPennsylvaniaSouth DakotaTexasWyomingConnecticutMissouriWest VirginiaIllinoisNew MexicoArkansasCaliforniaDelawareDistrict of ColumbiaHawaiiIowaKentuckyMarylandMichiganMississippiMontanaNew HampshireNew YorkOhioOregonTennesseeUtahVirginiaWashingtonWisconsinNebraskaSouth CarolinaIdahoNevadaVermontLouisianaRhode IslandSomerset, MA: HQ · Horner · Cleary · Captiva · Cooper StairworksFall River, MA: Remodelers OutletNashville, TN: Central Woodwork · CenWood ApplianceMemphis, TN: Central Woodwork · CenWood ApplianceDenver, CO: Architectural Concepts · Mountain HighParker, CO: Architectural ConceptsColorado Springs, CO: Mountain High ApplianceGlenwood Springs, CO: Mountain High Appliance
Our story

Built one door at a time

Full timeline
  1. 1948

    Horner Millwork is founded

    William Horner, who arrived from Belfast with $100, starts Horner Millwork selling prehung doors.

  2. 1980

    The Humphrey family buys Horner

    The Humphrey family purchases Horner Millwork, then an interior door prehanging shop in Somerset, believing a winning company is one customers can easily do business with.

  3. 1992

    North Atlantic Corp. is established

    Horner acquires NAMCO and Winter Building Products, and North Atlantic Corp. is formed to bring the companies together.

  4. 2002–03

    Cleary and Captiva

    Martin Millwork and Cleary Millwork are acquired and merged with NAMCO. The plant grows to 215,000 sq ft and Captiva Custom is introduced.

  5. 2015

    Home Genius and Barì

    Horner acquires Home Genius in Swansea, MA and launches the Barì cabinetry brand.

  6. 2025

    Architectural Concepts

    The Colorado door manufacturer and distributor joins North Atlantic in March.

For business owners

Join the family

Thinking about the future of the company you built? We’re a family business too, and we look for partners who want their name, people and customers to keep thriving.

Start a confidential conversation
Careers

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Sales, operations, manufacturing, logistics, showrooms and more, in Massachusetts, Tennessee and Colorado.

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