Authentic Moulding & Door Supply
Chestertown Living Room

#1 Builder Partner for Mouldings and Millwork in Long Island, NY

Authentic Moulding & Door Supply is Long Island's premier, #1 partner for builders and large construction firms . We stock the largest inventory of trim, moulding profiles, and millwork products for builders and contractors. We have served construction professionals for almost 25 years with quality products, expert service, and fast delivery. Whether you're a general contractor building new homes or a renovation specialist matching existing trim, we supply what you need.

Why Contractors Choose Our Moulding and Millwork Supply

25+ Years of Experience

Nearly 25 years of industry expertise serving contractors and homeowners. Our team knows construction. We help you select the right moulding profiles.

One-Stop-Shop

We stock more moulding profiles and millwork products, Everything you need for your project in one convenient location.

Premium Quality

We source from trusted suppliers. Every piece of moulding and millwork meets professional standards.

Frequently Asked Questions

  • What moulding and millwork products do you supply?
    We supply all types of mouldings, custom millwork, doors, and door hardware. Our showroom has the largest in-stock moulding variety on Long Island. We also run custom profiles in our on-site milling shop.
  • Do you serve all of Long Island, NY?
    Yes, we serve all of Long Island and surrounding areas. Our fleet of delivery trucks covers Glen Head, Glen Cove, and the entire Long Island region.
  • What's your delivery timeline?
    We offer same-day delivery on many in-stock items. Custom millwork takes longer depending on your project needs. Call us for exact timing on your order.
  • What brands do you carry?
    We carry quality moulding and millwork from top manufacturers. Visit our showroom to see our full product selection.
  • Do you offer same-day delivery?
    Yes! We keep large inventory on-site and run our own delivery trucks. Many items ship the same day you order them.
  • Do you offer same-day delivery?
    Yes, we offer same-day delivery on in-stock moulding and millwork across Long Island. Order early for afternoon delivery.

Get Reliable Moulding and Millwork Supply for Your Long Island Project

Ready to stock your project with quality materials? Visit our Glen Head showroom or contact us today.