Sigma Engineered Solutions 8-Pack 0.5-in and 0.75-in Plastic Electrical Box Knockout Plug in the Electrical Box Knockout Plugs department at Lowes.com
Knockout Plug Steel - Multiple Sizes
Garvin Southwire TOPAZ 1-1/4 Inch Knockout Plug (KO53)
How to Fill Missing Knockouts in Electric Boxes
1696 Bridgeport 2" Steel Knockout Plug
Arlington 904 1-1/2 Steel Conduit Knockout Plug
Amazon.com: (10 Pack) 1-1/4" ID Hole Knockout Locking Plugs for Panels - Nylon Plastic 1.25 Inch ID Round 1-3/8" Head Diameter - for Panel Thickness .016" - .125" | Body n Sheet
Amazon.com: Stimpson D3833SZ1000 Electric Knockout Plug Steel Zinc Plated Durable, Reliable, Heavy-Duty Fits 1" Hole Trade Size (D3833SZ) (1,000 Pieces) : Tools & Home Improvement
Morris 22386 Plastic Knockout Plug, 1/2-Inch, Black, 10-Pack | eBay
Pierceable Knockout Plugs for Enclosure Ports (bag of 100) - BAPI
OZ Gedney K0100S :: 1 IN KNOCKOUT PLUG :: PLATT ELECTRIC SUPPLY
Locking, Heat Stabilized Nylon, Knockout Plug - 1EMR5|1EMR5 - Grainger
Bridgeport® 9892 Knockout Plug, 3/4 in Hole, For Use With: Box/Enclosure, Plastic, Plain | SMC
17 pcs. 1" Steel Knockout Plug (NEW open box). | eBay
Amazon.com: Knockout Plug, Hole D 1 3/4 in, PK10 : Industrial & Scientific
Thomas & Betts 1455 Knockout Plug | Standard Electric Supply Co.
T&B® 1454 Industrial Fitting Locking Knockout Plug, 1-1/4 in, For Use With IMC/Rigid Conduit, Thermoplastic | Steiner Electric Company
Halex 1-1/2 in. Knockout Seal (3-Piece) (1-Pack) 20615 - The Home Depot
1451 - Abb - Thomas & Betts - Non Metallic Knockout Plug, 1/2", Thermoplastic
6 pcs. 1-1/4" Steel Knockout Plug (NEW open box). | eBay
RACO, 3/4 Conduit Size (In.), Steel, Knockout Plug - 52AW72|1043 - Grainger
Industrial Electrical Supply | Morris Products
Hardware Specialty | Heyco 1" Knockout Plug, 1.50" Diameter, .45" H, Silver-Gray
Steel City 1-1/4 In. 1/2 In. Plated Steel Knockout Seal - Anderson Lumber
