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Internet # 202865537

Model # DAD12X12

12 in. x 12 in. Duct Access Door

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  • Provides access to your ductwork
  • Durable galvanized steel construction
  • Can be used for ceiling or wall applications
  • View More Details
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Product Details

About This Product

Master Flow's Duct Access Doors provide a way to access the inside the flat surface of the ductwork. The door closes tightly. There are wide flanges surrounding the edges to ensure secure installation. There are no sharp edges making installation easier and safer.


  • Provides access to the inside of your ductwork
  • Door closes tightly
  • Wide flange surrounds to ensures secure installation
  • No sharp edges make installation easier and safer
  • Rough Opening: 11-1/8 in. X 11-1/8 in.
  • Return Policy

Product Information

Internet # 202865537

Model # DAD12X12

Additional Resources

Shop All Master Flow
From the Manufacturer



Actual Product Depth (in.)


Actual Product Height (in.)

12.25 in

Actual Product Width (in.)



Application Type


Color Family



No Additional Features

Maintenance, Repair & Supplies Product Type

Access Panels


Galvanized Steel

Nominal Size (in.)

12 x 12

Pack Size




Warranty / Certifications

Manufacturer Warranty

Free from Manufacturer Defect at Time of Delivery.

Questions & Answers

Q:Is there a gasket ?
by|Jan 28, 2019
2 Answers
Answer This Question

A:  No, this product does not have a gasket.

by|Feb 9, 2019

    A:  There is not a gasket. Should you have any further questions, you may contact Master Flow Technical Support at 1-800-211-9612.

    by|Jan 29, 2019
      Q:Is there a neoprene gasket to seal the door when shut? How is the door secured in the shut position?
      by|Aug 4, 2016
      1 Answer
      Answer This Question

      A:  No, the door does not have a neoprene gasket.

      by|May 3, 2023
        Q:Is it insulated?
        by|Mar 10, 2016
        1 Answer
        Answer This Question

        A:  No, this is not insulated.

        by|May 3, 2023
          Showing 1-3 of 3

          Customer Reviews

          4.8 out of 5

          • 4.8 out of 4 reviews
          • 100% recommend this product
          Filter by:
          Showing 1-4 of 4 reviews
          Easy Access Cure
          The hardest part of installing this product was cutting the hole. It certainly solved the coil cleaning access issue.
          • Pro
          • Verified Purchase
          • Recommended
          Rating provided by a verified purchaser...
          Rating provided by a verified purchaser
          • Verified Purchase
          Perfect for accessing ducts that need periodic cleaning.
          The lower part of my AC evaporator assembly had no access panel or way to get in for cleaning and removing dirt that was causing the condensation tray to overflow and flood the floor. This panel was the perfect solution. The only issues are a lack of thorough specifications in the item description. The size listing is the exterior, not the size of the hole that you will be reaching through. So this one is "12 inch", because that is the measure across the outer frame and sealing surface, but the actual hole is about 11 inch square. They sell something like four different sizes of these access panel doors, so it takes a bit of guessing to find the right one to fit and allow enough space to reach through. There are no instructions to tell you exactly what size hole to cut, which turned out to be 11 inches and a very small fraction of an inch. That size is pretty important for good, tight fit. So it took cutting the hole a little undersized and working on it with a file and grinder to get the panel to slide in snug without being sloppy loose. The photos do not show very well, but this has no hinge. There are clasps or latches on opposite sides. So there is no need to plan space or clearance for the door to rotate open in a tight mechanical room. It lifts completely out. The sheet metal bends can be a little skewed around the frame and latches, don't be afraid to tweak them.
          • DIY
          • Verified Purchase
          • Recommended
          2 found this review helpful
          Good price and easy installation
          This product was very easy to install and allowed sufficient access to clean my evaporator. This price was excellent and I saved a substantial amount of money by finding this product and soon it myself.
          • Verified Purchase
          • Recommended
          Showing 1-4 of 4 reviews