Insulated Commercial Hollow Metal Doors – Commercial Metal Frames – Sidelites – Borrowed Lites Transoms

Serving Our Local Community and Beyond For Over 20 Years!

Doors Unlimited Inc is your one-stop-shop for Commercial Hollow Metal Doors, Frames, Hardware  and Access Panels. With our in-house fabrication for Welded Frames, Borrow Lites, Transoms & Sidelites we reduce lead times otherwise found going through the factory.

Supplying products for Division 8 and 10 – Give us a try, you will not be disappointed.

Ask about our professional installation for customers in the Worcester, MA area!


Doors Unlimited Inc is your go-to destination for a wide selection of commercial metal doors, each uniquely designed to meet a variety of applications and sizes.

You can select from an array of door sizes and varieties, from single or double doors, louvered or glass doors, to fire-resistant doors that provide additional safety and security. Additionally, we offer a choice of hardware and accessories that complement and enhance your door installation.

Our free metal door quote service is fast and straightforward, enabling you to get started on your project right away.

Commercial Hollow Metal Doors
Commercial Hollow Metal Doors

Hollow Metal Doors

Standard hollow metal doors are 1-3/4″ thick and are painted with a prime coat suitable for painting. They are made of channel-reinforced steel sheets and filled with a polystyrene, kraft honeycomb, or polyurethane core.

With hollow metal doors you receive superior performance in terms of durability and strength compared to alternative materials. They can withstand more abuse and are much easier to maintain than wood or aluminum doors. As a result, metal doors have the lowest overall total cost of ownership compared to any other material.

We provide a full line of metal doors for new and retrofit construction projects in institutional, industrial, and commercial markets. We only provide hollow metal doors from manufacturers who meet the strict guidelines of the Steel Door Institute (SDI).

Carrying Steelcraft hardware prep locations, but we also offer replacement or retrofit doors with hardware prep locations from all manufacturers, including Mesker, Ceco, Curries, Old Republic, and Pioneer.


With our in-house fabrication shop we are able to weld even the toughest sidelite, transom or borrowed lite.

Welded hollow metal frames can be used for exterior or interior applications.  These welded frames provide a smooth seamless appearance by using our 16 gauge steel frames we first assemble then square, weld, grind smooth and prime paint each frame.  All welded frames come with anchors to meet your particular wall condition. 

commercial hollow steel metal door frames
Custom Quote
Build Your Custom Door

Use our interactive quoting tool to build your custom door easily and submit your quote for pricing.

Review Quote Invoice

Then we will send you an quote within 1-2 days for you to review. 

Fast Delivery

Once payment is completed, we prioritize fast  shipping so your doors arrive timely and ready to install! 

We Stock Hollow Frames
Doors Unlimited Door Frames
We Stock Hollow Wood Doors
Doors Unlimited Wood Doors
We Stock Metal Doors
Doors Unlimited Wood Doors



Discounts only valid during this promotional period. Once promotion ends, normal pricing applies.

commercial door sale


Have a competitors commercial door quote? We will meet or beat it with equal quality items. Quotes must show:

✔ line items

✔ pricing breakdown

✔ freight / crating costs

✔ grand total pricing

In-House Fabrication

No need to send your order our for fabrications, we are equipped with a full service welding & fabrication shop! Making Doors Unlimited Shop your top choice for it’s one-stop-shop advantage.

Offering prep, welding, sidelites, transoms & borrow lites as well as windows.