Ratings & Reviews for Sigma ProConnex 2-in Zinc-plated steel Knockout Seal Conduit Fittings
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise these plugs for their snug fit into knockout holes, requiring no tools and effectively sealing out pests, dust, and moisture. The snap-in design is consistently described as easy to install and removable for future upgrades. Reviewers highlight the sturdy, zinc-plated steel construction as durable and professional-grade, making them a reliable, affordable solution for closing unused electrical box openings. A few note sizing discrepancies between labeled and actual dimensions, and some mention difficulty installing if holes are slightly misaligned. Overall, most customers consider these an essential, go-to product for both professionals and DIYers.
Customer review summary generated by AI, including incentivized reviews.Keeps the wasps out
Would RecommendI used it to plug a hole in my garage door. Wasps were flying in there and making nests. I got tired of being chased and stung. This worked perfectly!
Reasonably priced to finish a contracted job.
Would RecommendWhen your contracted electrician doesn’t install the knock out plugs and you do it yourself. Easy to install and reasonably priced.
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Work as intended
Would RecommendThese work as intended nice tight fit. They should be installed with flush finished side on the outside of the box/enclosure
From 3_SLASH_4-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Work as intended
Would RecommendThese work as intended nice tight fit. They should be installed with flush finished side on the outside of the box/enclosure
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Electrical box cap
Would RecommendIt fit the electrical box i needed it for.
From 3_SLASH_4-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
'Step 'out of the box!
Would RecommendIt fit my unusual purpose. needed handrails on new steps so selected bathroom grab bars and cut to size needed. That left sharp opening and needed something to block it. I approached an associate at Lowes and described what I wanted to do and he took me to the electrical aisle. This knockout seal was exactly what I needed, blocked the opening and covered the sharp end.
From 3_SLASH_4-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Just a plug
Would RecommendNo big deal
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
have the right measurement.
Would RecommendThis is exactly what I need. However, I got the wrong size and will now need to determine what size I need.
Perfect fit to plus an open hole in my MSP.
Would RecommendFit an open hole in my MSP. Perfect plug.
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser