The Heavy Duty Rattleware Hush Gasket cuts back on the noise that comes with the job. These gaskets help protect knockbox holders as well as counter tops for recessed knockboxes.
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Please send me the interior and exterior dimensions of this gasket so I can know if it fits my knock boxes. Thank you. :D
Best Answer: The Rattleware Rubber Knockbox Hush Gasket has exterior dimensions of 7 1/16" by 7 3/8", and interior dimensions of 5 3/4" by 6 1/8".
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