Dometic RTX AC Interior Framing Support System for Promaster

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Patent Pending. Interior Framing Support System. Adds support when installing the RTX AC unit with one of our Patent Pending RTX Adapters for the Promaster. They are made of Expand ed PVC material. Much easier to work with than wood. They also provide a backing for the screws that hold up the vent interior bezel. Match the Bay to the position of the outside adapter that you are placing on the roof. The RTX will not fit in Bay 4 of the 159 or 159 extended. If you have Super High Roof Promaster, please let us know. The strips come unassembled. The strips are glued in with 3M Window Weld or Sikaflex 221. DISCLAIMER: Owner and/or installer assumes all risks associated with products and/or components purchased from DIYvan. Owner and/or installer recognizes and agrees that this product, and any of its component parts, is sold “as is” and that DIYvan makes no representation or warranty of merchantability that the product is fit for any particular purpose. Show more