#1 Home Improvement Retailer

Questions and Answers for Master Flow 15 in. Ductboard Triangular Terminal Box

Internet #202191807

Model #DTTB15

Store SKU #391823

  • Pre-cut for easy installation
  • R6 ductboard insulation
  • FSK reinforced backing

Questions & Answers

9Questions
caret
Q:Does the box have facing on the inside, or is it bare fiberglass?
by|Nov 25, 2023
1 Answer
Answer This Question

A:  Ductboard is designed with one side batre and one side faced. When properly put together the facing will be on the outside and the bare ductboard on the inside. If you have any inquiries about Master Flow products please email MasterFlowTech@gaf.com

by|Nov 28, 2023
    caret
    Q:Although there is a shiplap groove, there isn't a flap of the paper-backed foil in which to wrap over the edges to create the seal. Covering that exposed insulation with foil tape won't that cause condensation to form?
    by|Sep 8, 2023
    1 Answer
    Answer This Question

    A:  Not if sealed properly and the shiplap is tight.

    by|Oct 2, 2023
      caret
      Q:How many 6" collars can I if on this triangle?
      by|Jul 13, 2023
      1 Answer
      Answer This Question

      A:  It would depend on the placement.

      by|Aug 18, 2023
        caret
        Q:How many ducts can i connect to this terminal box? Also what is the biggest duct collar i can connect to the box?
        by|Jul 11, 2021
        1 Answer
        Answer This Question

        A:  The maximum collar would be a 10" collar, the quantity would depend on the size of the ducts. If you have any other inquiries about our Master Flow products please email warrantyllbp@gaf.com or call Technical Services at 800-211-9612, Mon- Fri, 8 am 5 pm EST.

        by|Mar 27, 2023
          1 found this answer helpful
          caret
          Q:How many ducts can i connect to this terminal box? Also what is the biggest duct collar i can connect to the box?
          by|Jul 11, 2021
          1 Answer
          Answer This Question

          A:  The maximum collar would be a 10" collar, the quantity would depend on the size of the ducts. If you have any other inquiries about our Master Flow products please email warrantyllbp@gaf.com or call Technical Services at 800-211-9612, Mon- Fri, 8 am 5 pm EST.

          by|Jul 12, 2021
            caret
            Q:What is this for? Is this instead of a Y? Is it to to split my flex duct to two lines?
            by|Jun 25, 2020
            1 Answer
            Answer This Question

            A:  Yes this can be used as a "wye". this can be use to divert airflow from one supply to multiple outlets. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

            by|Jun 25, 2020
              caret
              Q:does masterflow offer a square terminal box 15" or 24" thru home depot on line?
              by|Aug 17, 2019
              1 Answer
              Answer This Question

              A:  Not at this time, If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

              by|Aug 19, 2019
                caret
                Q:What is the max size duct?
                by|Dec 17, 2016
                2 Answers
                Answer This Question

                A:  We will need more information regarding your question, please call 800-211-9612 or email warrantyllbp@gaf.com

                by|Jul 25, 2021

                  A:  A 10" takeoff collar fits well. Any larger and you may not be able to fold all the tabs back.

                  by|Jun 30, 2019
                    2 found this answer helpful

                    Frequently Bought Together

                    Best Seller
                    +
                    +
                    Price:
                    $38.03