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Plastic Knockout Plugs - This Plastic Cap plugs knockouts in any enclosure

Use this Knockout Hole Plugs to plug unused knockout holes in box or enclosure

  • Trade Size indicated in Chart Indicates Conduit Size For actual OD dimension see Mounting Hole Diameter in chart

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Specifications

Cat NoSpec SheetsMounting Hole DiameterTrade Size
21721 Spec Sheet0.85"1/2 in.
21722 Spec Sheet1.10"3/4 in.
21723 Spec Sheet1.35"1 in.
Item # Description/Size Availability Color Qty Break Price Quantity
21721
Plastic Knockout Plugs 1/2 in. (100 pack)
In Stock 1 $8.00
21722
Plastic Knockout Plugs 3/4 in. (100 pack)
In Stock 1 $11.00
21723
Plastic Knockout Plugs 1 in. (50 pack)
In Stock 1 $6.50

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