I am working on a military project. I have to provide a non-metallic coupling on one side of wall. It is a penetration into a secured area. Any ideas on what to use as a non-metallic coupling for 4" sch 40 pipe?

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Please feel free to call if you have any questions or comments.

Sincerely,

Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
Office (480) 505-9271
Fax (866) 430-6107

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