HOW TO RETROFIT A SQUARE PIPE
Due to the unique patented design of the Dektite® Retrofit™ a standard rule cannot be applied when sealing around a square pipe or duct. For square penetrations simply measure the side of the square, select the correct Dektite® Retrofit™ size and cut to the correct ring as shown.
Note: When flashing a square pipe a bead of silicone should be applied along the junction between the EPDM and the pipe. Do not pull back the EPDM to apply the silicone as this can affect the Dektite® seal against a flat surface.
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