Top Hat Grommets


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Top hat grommets are used to connect pipe work to your tank or through any hard surface. Available in four, thirteen and nineteen millimeters.

Questions & Answers

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  • Do the sizes (4, 13, and 19mm) refer to the size of the hole the grommet pushes in to; the size of the hole in the grommet; or the overall diameter of the grommet?

    Hi there,


    The size references the overall diameter of hole of the grommet.

    Kind Regards,

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