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Nylon Knockout Seals for Thicker Panels plug electrical knockouts. They are molded in gray color to resemble galvanized steel, and come in 6 trade sizes fit 1/2" to 2" knockout holes for panels up to 1/4" thick.
HEYCO® Nylon Knockout Seals for Thicker Panels
Unit of Measure
Items HEYCO® Nylon Knockout Seals for Thicker Panels
20300114-A07I
HEYCO® 1.375 Inch (in) Mounting Hole Diameter Nylon Knockout Seal for Thicker Panel
HEYCO® Nylon Knockout Seals for Thicker Panels
20300470-A070
HEYCO® 0.875 Inch (in) Mounting Hole Diameter Nylon Knockout Seal for Thicker Panel
HEYCO® Nylon Knockout Seals for Thicker Panels
20300471-A070
HEYCO® 1.093 Inch (in) Mounting Hole Diameter Nylon Knockout Seal for Thicker Panel
HEYCO® Nylon Knockout Seals for Thicker Panels
20300472-A070
HEYCO® 1.750 Inch (in) Mounting Hole Diameter Nylon Knockout Seal for Thicker Panel
HEYCO® Nylon Knockout Seals for Thicker Panels
20300473-A070
HEYCO® 2.000 Inch (in) Mounting Hole Diameter Nylon Knockout Seal for Thicker Panel
Description N/A Nylon Knockout Seals for Thicker Panels plug electrical knockouts. They are molded in gray color to resemble galvanized steel, and come in 6 trade sizes fit 1/2" to 2" knockout holes for panels up to 1/4" thick.
Brands N/A HEYCO®
Head Diameter N/A 1.500 in38.10 mm N/A 1.015 in25.80 mm N/A 1.218 in31.00 mm N/A 1.906 in48.40 mm N/A 2.140 in54.40 mm
Mounting Hole Diameter N/A 1.375 in34.90 mm N/A 0.875 in22.20 mm N/A 1.093 in27.80 mm N/A 1.750 in44.50 mm N/A 2.000 in50.80 mm
Overall Height N/A 0.562 in14.30 mm N/A 0.562 in14.30 mm N/A 0.562 in14.30 mm N/A 0.562 in14.30 mm N/A 0.579 in14.70 mm
Maximum Panel Size N/A 0.250 in6.40 mm
Color N/A Silver Gray
Material N/A Nylon 6/6
Temperature Index1 N/A 125 ºC
Flammability Rating N/A 94V-2
Industry Standards/Certifications N/A Recognized under the Component Program of Underwriter's Laboratories, File #E-15331. Certified by Canadian Standards Association, File #LR-8919
Features and Benefits N/A
  • Six trade sizes fit 1/2" to 2" knockout holes for panels up to 1/4" thick
  • Locks firmly in boxes up to 1/4" thick
  • Installs quickly with fingertip pressure (no tool required)
  • Economical
  • 1 Maximum temperature on part not to exceed 105 ºC