Ratings & Reviews for Sigma ProConnex 3/4-in Zinc-plated steel Knockout Seal Conduit Fittings
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise these knockout plugs for their reliable performance, secure fit, and professional finish. Most highlight the snug, tool-free installation that effectively seals unused holes without requiring tools. The rigid metal construction, particularly the zinc-plated steel, earns consistent commendation for durability and code compliance. Reviewers appreciate how the plugs prevent pests and dust while enhancing panel appearance. A few note sizing inconsistencies or mention the tight fit requires leverage. Overall, customers consider these plugs an elegant, cost-effective solution for closing unused knockouts.
Customer review summary generated by AI, including incentivized reviews.Easy to install
Would RecommendFirmly fit
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Works as needed
Would RecommendFitted and easy to install
Verified Purchaser
Easy!
Would RecommendThe plug is easy to snap into place — like the knockout was never removed.
Verified Purchaser
Excellent!
Would RecommendPerfect for closing an unused knockout!
Verified Purchaser
Does what it’s supposed to do
Would RecommendFit perfectly.
Unable to judge
Would RecommendUnfortunately, it did not fit the hole in my junction box. The hole must be between sizes.
Verified Purchaser
Perfect fit at a great price
Would RecommendGreat quality
From 1-1_SLASH_4-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Snaps into place
Would RecommendEasy way to plug open holes in the junction box when wires are removed.
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Dose not fit the boxes I bought
Would Not RecommendDid not work like I thought
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Doesn’t get any easier than this
Would RecommendEasy to install no tools required
From 1-1_SLASH_4-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Works as it should
Would RecommendI was able to fill an old void without having to replace the whole electrical box
Inexpensive fix.
Would RecommendPlugs holes like it should.
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Perfect for missing/open holes in breaker panel.
Would RecommendEasy to find, install and did the job perfectly
From 1-1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
They work well with a little finesse.
Would RecommendThese are a little stiff to insert but doable with a little bending of the fingers. They are also a bit pricy.
From 1_SLASH_2-in Zinc-plated steel Knockout Seal Conduit Fittings Verified Purchaser
Thank you for your feedback of this Knockout Seal. We’re sorry to hear the knockout seal didn’t fit the boxes you purchased or work as expected. Knoc...