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Internet # 202191776

Model # GFS24X361P

Store SKU # 668712

24 in. x 36 in. Galvanized Steel Flat Sheet

$19.98
  • Ideal for small custom metal applications
  • Durable galvanized steel construction
  • Can be cut with tin snips
  • View More Details

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Product Details

About This Product

The Master Flow 24 in. x 36 in. Galvanized Steel Flat Sheet is the ultimate product for custom fittings. This flat sheet is made of 30-Gauge galvanized steel for durability and sturdiness. You can cut this sheet into almost any size for your tough-to-fit jobs. It is recommended to seal your seams with building code approved sealant or duct tape.

Product Information

Internet # 202191776

Model # GFS24X361P

Store SKU # 668712

Additional Resources

Shop All Master Flow
From the Manufacturer

Specifications

Dimensions: H 24 in, W .0124 in, L 36 in

Dimensions

Product Height (in.)

24 in

Product Length (in.)

36 in

Product Width (in.)

.0124 in

Details

Duct Type

Shell Only

Gauge

30

Insulated

No

Material

Galvanized Steel

Pack Size

1

Returnable

90-Day

Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Questions & Answers

Use as bottom plate of outdoor Firepit ?
ByAug 4, 2026
1 Answer | 
Answer This Question

This 30 ga flat sheet is designed and used for HVAC systems and ducts. All other applications are at the discretion of the buyer. If you have any other inquiries about our Master Flow products, contact Technical Services at masterflowtech@gaf.com.

By|Aug 5, 2026


    How much does this size weigh?
    ByJun 26, 2026
    1 Answer | 
    Answer This Question

    The approximate weight for a single 24 in. x 36 in. sheet is 2 lbs. Should you have any additional inquiries regarding our Master Flow products, please contact us at masterflowtech@gaf.com.

    By|Jun 27, 2026


      I am looking to temporarily cover a wood burning chimney, will it work for that purpose ?
      ByJun 17, 2026
      1 Answer | 
      Answer This Question

      While this galvanized steel sheet may be suitable for covering your chimney opening, please note that it is specifically designed for HVAC applications. Any use outside of its intended purpose is at the buyer's discretion. Should you have further inquiries regarding our Master Flow products, please contact our Technical Services department at masterflowtech@gaf.com.

      By|Jun 23, 2026


        How do I cut this into 12” strips?
        ByMay 17, 2026
        1 Answer | 
        Answer This Question

        For cutting, we recommend using sheet metal tools, such as tin snips or a shear. This product is designed for HVAC applications and is constructed of galvanized steel. Please use personal protective equipment when handling sharp objects, such as sheet metal. If you have any additional questions regarding Master Flow products, please email MasterFlowTech@gaf.com.

        By|Jun 23, 2026

          (1)

          Will magnets stick to it
          ByApr 12, 2026
          1 Answer | 
          Answer This Question

          Yes, but this is designed for HVAC applications it is made of galvanized steel. All other applications are at the discretion of the buyer. If you have any other inquiries about our Master Flow products please contact Technical Services at masterflowtech@gaf.com

          By|Apr 14, 2026


            Will magnet stick to this
            ByFeb 7, 2026
            1 Answer | 
            Answer This Question

            Yes, but this is designed for HVAC applications; it is made of galvanized steel. All other applications are at the discretion of the buyer. If you have any other inquiries about our Master Flow products, please contact Technical Services at masterflowtech@gaf.com

            By|Feb 10, 2026


              can this be placed on a sheet rock wall
              ByNov 1, 2025
              1 Answer | 
              Answer This Question

              This is designed and used for HVAC systems and ducts. All other applications are at the discretion of the buyer. If you have any other inquiries about our Master Flow products, contact Technical Services at masterflowtech@gaf.com.

              By|Nov 3, 2025


                Can I use this on the inside of a window to block sunlight and darken a room? Would direct sunlight through the window release toxic fumes?
                ByOct 8, 2025
                1 Answer | 
                Answer This Question

                This is designed and used for HVAC systems and ducts. All other applications are at the discretion of the buyer. If you have any other inquiries about our Master Flow products, contact Technical Services at masterflowtech@gaf.com.

                By|Oct 8, 2025


                  Viewing 1-8 of 119

                  Customer Reviews

                  4.5 out of 5

                  • 4.5 out of 333 reviews
                  • 91% recommend this product
                  Filter by:
                  Showing 1-10 of 333 reviews
                  Met my needs at a fair price. No issues cutting.or shaping the metal
                  by
                  Response from Master FlowJul 31, 2026
                  Glad that you are satisfied with your purchase and thank you for the review. If you have any other inquiries about our Master Flow products please email, masterflowtech@gaf.com MasterFlow
                  I bought three of these to use next to my stove to protect my cabinets. These were the perfect size without having to cut them down. Except I didn't have to cut off a small corner at the base of my cabinet, but with the right shears it was super simple to cut without any issues. I used a spray adhesive and extra strong gorilla tape to adhere the backing to the sides of the cabinets and so far (about a month) it is holding up great. This is makes clean up after cooking much easier, and allows more light around the stove since it's pretty reflective. It does dent and bend easily, so be careful upon handling (reason for taking a star off). I can see some pre-installation dents on it but not a deal breaker. For my purposes, this worked out perfectly. I am concerned with the sharp edges but with how I installed them I am hoping it shouldn't be an issue. I might add some channels along the edges in the future but I suppose I'll see if it's necessary down the road.
                  by
                  Response from Master FlowJun 23, 2026
                  Happy to hear that you are satisfied with our product and thank you for your feedback. If you have any other inquiries about our Master Flow products please email, masterflowtech@gaf.com MasterFlow
                  This customer chose to rate the product and not provide text.
                  by
                  Response from Master FlowAug 4, 2025
                  Glad that you are satisfied with the product. If you have any other inquiries about our Master Flow products please email, masterflowtech@gaf.com MasterFlow
                  • Verified Purchase
                  I make hand crafted furniture and use these galvanized panels in the doors of my farmhouse series. They are easy to punch designs in
                  by
                  Response from Master FlowOct 7, 2024
                  Happy to hear that you are satisfied with your purchase and thank you for your feedback. If you have any other inquiries about our Master Flow products please email, masterflowtech@gaf.com MasterFlow
                  • Verified Purchase
                  1 found this review helpful
                  This customer chose to rate the product and not provide text.
                  by
                  Response from Master FlowApr 2, 2024
                  Glad you were satisfied with your Master Flow purchase. Thanks for posting your feedback. MasterFlow
                  • Verified Purchase
                  package, was damaged and though the product
                  The galvanized steel sheet Was damaged see picture, because the package was too flimsy
                  by
                  Response from Master FlowFeb 6, 2024
                  Sorry for your experience. Thank you for your feedback and we value your concerns. We will look into this further. If you have any other inquiries about our Master Flow products please email, masterflowtech@gaf.com MasterFlow
                    • Recommended
                    1 found this review helpful
                    Horrible packaging - arrived SO damaged
                    Was super excited to get two sheets of these for magnet boards, but they both arrived SO damaged, that I cannot use them. Poor packaging is the problem. Just a cheap "one-sided" box, which left metal open to all kinds of issues. Every single corner was curled, crinkled or both. Crinkled along edges. Bent at corners. I called to ask if I could ship back via USPS instead of UPS. It was a no-go, but the woman was very nice. I live on an island. No Home Depots here to return to.
                    by
                    Response from Master FlowFeb 5, 2024
                    Sorry for your experience. Thank you for your feedback and we value your concerns. Can you send a photo of the product to, Masterflowtech@gaf.com. Thank you. MasterFlow
                      1 found this review helpful
                      FALSE
                      Now, I’m not the brightest light in the chandelier, but that sure don’t look a 0.25 in to me, deceptive advertising, these ppl can’t seem to get SH1T right.
                      by
                      Response from Master FlowFeb 6, 2024
                      The 0.25 dimension is a typo. Under product details, this is specified as 30 gauge sheet metal. 30 gauge sheet metal is not 1/4 inch thick. MasterFlow
                        1 found this review helpful
                        I bought this galvanized sheet to replace an aluminum sheet I was working with. They were both the same thickness. It will be used in a humid environment. I thought steel might be too tough to work with, but I was able to bend it and cut it easily.
                        by
                        Response from Master FlowDec 22, 2023
                        Thank you for the feedback. Glad you were satisfied with your Master Flow purchase. MasterFlow
                        • Verified Purchase
                        FRAUD!! DO NOT PURCHASE
                        THIS IS SUPER THIN METAL NOW 1/4” thick as the description says! ABSOLUTELY UNACCEPTABLE AND DECEPTIVE
                        by
                        Response from Master FlowOct 2, 2023
                        The 0.25 dimension is a typo. Under product details, this is specified as 30 gauge sheet metal. 30 gauge sheet metal is not 1/4 inch thick. MasterFlow
                          • Recommended
                          1 found this review helpful
                          Showing 1-10 of 333 reviews