Serving the Greater Delaware Valley, Wayne, Norristown, King of Prussia

Diamond Plate
& Sidewalk Doors

SINCE 1963

Upgrade your business or commercial property with a safe, durable sidewalk door.

If your diamond plate door does not have the Steelway logo, then you do not have the best! Steelway Cellar Doors has been manufacturing custom steel access doors since 1963. We have remained focused on the cellar access business ever since our beginning, and we understand the complexity that sidewalk doors can often present. We are committed to providing each of our customers  across Pennsylvania, New Jersey, and the entire Delaware Valley with a positive experience and a quality product, and our line of diamond plate sidewalk doors and aluminum sidewalk doors will solve all of your problems!
Our line of standard size doors will meet all code requirements for sidewalk doors in a cost-effective, quick-delivery manner. We also make custom size sidewalk doors that are designed to make the installation process as easy as possible. These access doors are made to fit the specific opening – no more cutting foundations to fit the door. There isn’t an opening that we can’t cover!

Diamond plate sidewalk access doors to fit your needs in Norristown, Wayne & West Chester

We understand that not all diamond plate doors have to be custom made, so we have introduced a line of standard sidewalk doors. These diamond plate doors are all designed to fit standard openings or to work as a quick solution when you are pouring new sidewalks. All of our standard doors support 300lb/s.f. live load, are prime coated with one finish coat of black paint and are in stock ready for same day shipping.


If you need a custom diamond plate door, we can make any size or shape to fit your needs! All you need to do is take the dimensions of the door and we will make a door specifically designed to fit your application and requirements.

Steelway Custom Diamond plate door Features in Delaware County, PA:

3/16: diamond plate door panels

1/4″ angle iron frame

All welded seams ground smooth

Primer and finish coat of paint

Additional locking and safety options

Safety Chain

3/16: Diamond Plate Door Panels, 1/4” Angle Iron Frame, All Welded Seams Ground Smooth, Primer and Finish Coat of Paint, Additional Locking and Safety Options

Hinge System

We use 1/2″ x 1″ stainless steel bar stock with a stainless steel 3/8″ hinge pin for rugged durability even in the most demanding commercial applications.


Our strong 3″ x 3″ x 1/4″ angle iron frame is welded to our exact dimensions and all the seams are ground smooth for the correct fit and a professional finish that will last for decades.


All Steelway diamond plate doors have a 3/8″ round rod handle on the right door for easy pull-up and no maintenance. We use our recessed Steelway handle whenever possible.

Padlock Tabs

Keeping your access secure is as easy as specifying where you want your padlock tabs. Just tell your salesperson what your locking needs are and we will solve your problem.

Rebar Studs

If this is a new construction, we can weld #4 rebar studs under the frame to make sure the unit is permanently secure.

Aluminum sidewalk doors in Montgomery County, PA, New Castle County, PA, & across the Greater Delaware Valley

We also provide an aluminum sidewalk door option, designed for easy operation and superior durability. These aluminum sidewalk access doors are built for easy lifting and accessibility, as well as quality waterproofing and a stylish design. Our steel and aluminum sidewalk doors are guaranteed to last for years to come while providing you with easy access and a convenient entranceway.

Interested in learning more about our steel and aluminum pedestrian sidewalk doors? Steelway Cellar Doors is your certified manufacturer of diamond plate doors in West Chester, Philadelphia, Wilmington, Abington, Haverford, Cheltenham, Havertown, Norristown, King of Prussia, Wayne, and surrounding areas, offering free, no-obligation cost estimates. If you need a diamond plate door replacement or installation, we can help!

Photo Gallery

Our line of sidewalk doors is the right option when you are looking for the perfect egress. Take a look at some Steelway Cellar Doors has installed.


“Attention to Detail”


“Took six months before we got around to installing the Steelway Cellar Door but we did it!  We really appreciate the workmanship.  It was rewarding to find that all the careful ....”




“They were excellent, cleaned work area so well you wouldn't have known they were there. The overall experience was wonderful. No issues and the door looks great.....”

Denise Kehoe

“Excellent Work!”


“Steelway did an excellent job outlining the scope of the project, handling the permit, and installing the egress. From start to finish, everything ran smoothly. John and Andrew did....”

David - North Wales, PA



“We want to thank the team at Steelway Cellar Doors for the efficient way in which our order was processed, from the first call I made in August when I talked to Carter Williams for....”

Lois & Rosina - Burlington, NJ



“My customer and I were very pleased with the quality of the door. I will definitely use you again in the future as well as recommend your company to others.....”

Evan - Souderton, PA

“Worth every penny”


“I finished installing my new custom-made cellar door a couple weeks ago. I cannot tell you how pleased I am with the quality, durability, and craftsmanship of the doors. They were ....”

Mark - New Castle, DE

“Dry Basement!”


“Thank you very much. For the first time in 7 years there has been no water in my basement. Please feel free to use me as a reference.....”

Mark - Perkiomenville



“Norm: I just wanted to drop you a line, and say ..... THANK YOU VERY MUCH!!! You, and your guys did a GREAT job! You were always there when you said you would be, on time, and read....”

Sergeant John - Philadelphia, PA

“Highly Recommend”


“My review is in two parts to explain what I believe are the true signs of a great company. We contracted Steelway from a recommendation and requested an estimate. Norman came out p....”

William - Limerick, PA

“Our appreciation”


“We have received our new cellar door and installed it. It is awesome and fits like a glove. Thank you for helping us get just the right fit and for making a good quality door. Plea....”

Sheila - Tecumseh, NE

“Excellent customer service!”


“On July 10th you installed a new cellar door unit for us. We would just like to thank you for #1) responding to our telephone call; #2) sending information promptly; #3) returning ....”

Albert & Carole - Royersford, PA

“Quality product at a reasonable price”


“Thank you for your follow up and resolution to my order. I received the door on Monday. I am pleased with it's fit and finish. While, barring catastrophe, I don’t expect to have ....”

Bill - Portsmouth, NH

“Impressed with the workmanship”


“I received my door via Overnight Express freight on June 30th. I am very impressed with the workmanship. I began the install on the following Saturday. I removed the old door, perf....”

Norm - Middletown, IN

“Job well done!!!”


“I just wanted to send a quick thank you for all the help, guidance, and patience with me on this project. Everything seemed to go very smooth this morning, and I am very excited ab....”

Jerry - Bear, DE

“Many thanks”


“The window well cover fits great and looks wonderful. Many thanks.....”

David - Malvern, PA

“Thanks Again”


“Just a quick note to let you know we received the cellar door last Wednesday and installed it on Friday. It fit perfectly and looks great. We are very pleased. Please let Mr. Willi....”

Tim - Freeport, ME

“Thank you for offering a quality product”


“I live in the Olney section of Philadelphia and I had your firm come out and install my basement door. I want to let you know that I have been very pleased with the purchase of the....”

Michael - Philadelphia, PA

“Professional and Courteous”


“Last week two of your employees, Mike and Ben, came to our home to install an exterior entranceway into our basement. I wanted to let you know how professional and courteous both o....”

Corey - Hatfield, PA

“Thanks to all!”


“I just wanted to let you know that the door fit fine and looks great; my compliments to your company. It was a good experience on the web, over the phone, and in person. Thanks to ....”

Denny - Shady Side, MD

We’re the

In the Greater Delaware Valley, Wayne, Norristown, King of Prussia, and the entire Delaware Valley!