Plastic Knockout Plugs UL Recognized Threaded Plugs

Threaded knockout plugs UA-010, UA-011, UA-012 & UA-014 from Polycase create a waterproof seal. Buy hole plugs from Polycase today.
Polycase is a premier manufacturer of electronic enclosures, dedicated to providing the best customer service in the industry. With over 65 years of continuous service to the electronics and electrical industries, we can be your trusted partner.

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Knockout Plugs