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TAYMAC CP450WH Weatherproof Metal Closure Plug, 1/2 in. NPT
The TAYMAC CP450WH Weatherproof Metal Closure Plug is built to seal unused 1/2 in. NPT openings on weatherproof device covers and enclosures, helping electrical contractors maintain a clean, weathertight installation. Each plug is constructed from durable cast metal and finished in white to coordinate with light-colored weatherproof covers and boxes. The compact plug measures just 0.31 in. in depth once installed, keeping the profile low and unobtrusive. This closure plug is UL Listed, supporting code-compliant work on residential and commercial electrical projects. TAYMAC ships the CP450WH in a convenient polybag of 4, giving installers enough plugs on hand to close out multiple unused openings on a single job without ordering individual pieces.
Key Features
- Trade Size: Sized for 1/2 in. NPT openings, matching standard weatherproof device cover and enclosure threading.
- Durable Construction: Cast metal body stands up to repeated handling and outdoor exposure better than lightweight plastic alternatives.
- White Finish: Clean white finish blends in with common weatherproof cover colors for a finished, professional look.
- Low-Profile Design: 0.31 in. depth keeps the plug flush and unobtrusive once threaded into place.
- Convenient Multi-Pack: Sold in a polybag of 4, ideal for jobs requiring several closure plugs at once.
- UL Listed: Recognized listing supports code-compliant electrical installations.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Material: Cast Metal
- Product Color: White
- Product Depth: 0.31 in
- Certified Listed: UL Listed
Typical Applications
- Weatherproof Device Cover Installations
- Sealing Unused 1/2 in. NPT Conduit Openings
- Outdoor and Wet-Location Electrical Enclosures
- Residential and Commercial Electrical Projects
- Renovation and New Construction Wiring
Why TAYMAC?
TAYMAC builds weatherproof electrical accessories from durable cast metal so installers get long-term reliability in demanding indoor and outdoor environments. The CP450WH closure plug is UL Listed, giving electricians confidence that unused 1/2 in. NPT openings can be sealed cleanly and in compliance with code. Packaged four to a polybag, it's a straightforward, dependable way to finish out weatherproof device covers on any job.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- TAYM-20260916
- Product Material:
- Cast Metal
- Product Color:
- White
- Product Depth:
- 0.31 in
- Certified Listed:
- UL Listed
- Product Type:
- Closure Plug
- Department:
- Electrical
- Product Subgroup:
- Weatherproof Covers
- Product Group:
- Wiring Devices
TAYMAC CP450WH – Frequently Asked Questions
1) Will the TAYMAC CP450WH closure plug thread into a 1/2 inch NPT opening on a weatherproof cover?
That is exactly what the CP450WH is for. It threads into 1/2 in. NPT openings on weatherproof device covers and enclosures, which is the standard threading on those covers. Once seated it sits only 0.31 in. deep, so it does not stand off the cover face.
2) Is the TAYMAC CP450WH plug UL Listed for code-compliant work?
Yes, the CP450WH is UL Listed. For inspectors who want unused openings in a wet-location enclosure sealed with a listed closure rather than tape or a field improvisation, that listing is the point of the part.
3) What is the closest alternative to the TAYMAC CP450WH closure plug if a gray finish is needed instead of white?
The TAYMAC CP450WH is a cast metal closure plug finished in white, intended to coordinate with light-colored weatherproof covers and boxes. When the cover and enclosure on the opening are gray, the Pass & Seymour WPBP series weatherproof closure plug is the comparable part, offered in gray. Both are closure plugs for sealing unused openings on weatherproof device covers, so the decision comes down to matching the finish already on the enclosure.
4) Is the CP450WH plug metal or plastic?
Cast metal, finished in white. For outdoor and wet-location covers that get handled repeatedly, the cast body holds threads better than a light plastic plug, and the white finish matches common white weatherproof covers and boxes.
5) How many closure plugs come in a pack of TAYMAC CP450WH?
Four plugs per polybag. That is a single order line that closes out several unused openings on one job rather than buying plugs one at a time.
6) Can I use a 1/2 inch closure plug like this on an outdoor box in a wet location?
Yes. The CP450WH is made for outdoor and wet-location electrical enclosures as well as weatherproof device covers, on both residential and commercial work. Its job is to keep water out of a threaded 1/2 in. NPT hub or cover opening that no longer has a device or fitting in it.
7) Is a plastic closure plug an acceptable substitute for the TAYMAC CP450WH?
The CP450WH uses a cast metal body, which is the reason it is specified where plugs see repeated handling and outdoor exposure rather than a lightweight plastic alternative. A plastic plug can thread the same 1/2 in. NPT opening, but it is a different material and will not match a metal weatherproof cover for durability in that service. Among closure plugs, the Pass & Seymour WPBP series is the other weatherproof closure plug commonly specified for sealing unused cover openings.
8) I'm standardizing closure plugs across a property. Is one TAYMAC part number enough for all my weatherproof covers?
Only for 1/2 in. NPT openings. The CP450WH covers that one trade size, which is the most common on weatherproof device covers, so one part number handles the bulk of a fleet. Openings in other trade sizes need a different plug, so count your hub sizes before ordering in volume.
How fast can I get the TAYMAC CP450WH delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TAYMAC CP450WH come with a warranty?
Absolutely. The TAYMAC CP450WH is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the TAYMAC CP450WH?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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