- Stock 12
:
from
to
Clear
Clear
Knockout plug filler · 1/2 in plastic snap-in for unused box knockouts · Nesco ETD50
SKU: NES-ETD50
Plastic snap-in knockout filler for closing unused 1/2 in trade size openings in electrical boxes and enclosures. Commonly used to help limit dust entry and maintain a finished installation; verify suitability for the enclosure and environment.
What this product is for
The ETD50 is a 1/2 in plastic knockout plug filler used to close unused knockout openings in electrical boxes, cabinets and enclosures. It is intended for trade professionals who need a quick snap-in closure for standard 1/2 in trade size holes.
Use for
Use for unused 1/2 in trade size knockouts in panels, junction boxes and similar enclosures. It is commonly selected where a simple snap-in closure is preferred for indoor electrical work and general box clean-up.
Avoid for
Avoid using this item where a metal closure, bonding path, listed raintight seal or application-specific environmental rating is required. Confirm code, enclosure listing and site conditions before use.
Best for
Best for electricians and maintenance teams closing spare 1/2 in knockouts during retrofit, service and new installation work. A plastic snap-in style can speed up installation where a simple filler is acceptable.
Installed in
Typically installed in electrical boxes, cabinets and enclosures with 1/2 in trade size knockout openings. 1/2 in trade size is approximately 7/8 in (22 mm) actual knockout diameter in many box applications; verify the actual opening before ordering.
Why this product exists
Unused knockouts should be closed to help reduce entry of dust and debris and to leave a safer, more finished enclosure. This filler provides a simple snap-in method for closing an unused opening without adding conduit or a fitting.
Compared with similar products
Compared with steel knockout seals, this plastic filler is typically chosen for quick snap-in installation and general closure duty. Where bonding, impact resistance or specific environmental performance is required, a steel or listed sealing product may be the better choice.
Specifications
- Manufacturer: Nesco
- Manufacturer part number: ETD50
- Product type: Plastic knockout plug filler
- Trade size: 1/2 in
- Application: Close unused knockout holes in boxes and enclosures
- Style: Snap-in knockout filler
- Material: Plastic
- Typical packaging reference found online: box of 50
- Buying note: Trade size does not always equal exact hole diameter. Verify the enclosure knockout size before purchase.
Any estimated fit guidance depends on enclosure design and manufacturer tolerances.
- ApplicationClose unused knockout holes in boxes and enclosures
- StyleSnap-in knockout filler
- MaterialPlastic
- Trade Size1/2 in
- Buying NoteTrade size does not always equal exact hole diameter. Verify the enclosure
- BrandsNesco
- Stock in Flesherton2
Aptico Supply Delivery
Fast Electrical Supply Delivery Across Ontario
Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.
Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
Contact Aptico SupplyWe accept the following payment methods:
To replace this text with your store's actual info on payment methods, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Payment methods page.
This page is intended for your policy regarding returns and refunds.
Here you can provide information as to what products can be returned, how many days your customers have to return their purchase, whether they will receive a refund in the original form of payment, a replacement or a store credit, who pays for the shipping of the previously purchased products to the store, and so on.
To replace this text with your store's actual return policy, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Return Policy page.
Related products
- Stock 4
Cooper Wiring Devices MPN: TRSGF20V GFCI duplex receptacle · 20A 125V · tamper resistant self-test ivory · Eaton TRSGF20V
