Knockout Plug Steel - 1/2" to 2" Sizes Available

Knockout seals are designed to securely close off unused knockout holes in steel outlet boxes, junction boxes, and metal enclosures. These snap-in seals provide a simple, tool-free solution for preserving the safety, cleanliness, and integrity of electrical installations by helping to block dust, debris, and moisture.

Constructed from durable carbon steel with a corrosion-resistant zinc-plated finish, these seals are built to withstand tough environments and extend the life of your enclosures. Ideal for both commercial and residential applications, knockout seals ensure compliance while offering a clean, finished look.

Product Specifications:

• Type: Knockout Seal

• Application: Seals open holes in metal boxes and enclosures

• Style: Snap-in design for fast, tool-free installation

• Size Range: 1/2" to 2"

• Connection Type: Snap-in mechanism for secure fit

• Material: Carbon Steel

• Finish: Zinc-Plated for corrosion resistance

Certifications:

• UL Listed – Meets industry safety standards

These seals are a go-to solution for electricians and contractors who need fast, effective closure of open knockouts in the field.