--- product_id: 324122863 title: "Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box" brand: "sigma engineered solutions" price: "¥4950" currency: JPY in_stock: true reviews_count: 5 category: "Sigma Engineered Solutions" url: https://www.desertcart.jp/products/324122863-sigma-electric-engineered-solutions-gray-143854-1-2-inch-5 store_origin: JP region: Japan --- # 5 x 1/2-inch knockouts UL & CSA wet location rated Powder-coated corrosion resistance Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box **Brand:** sigma engineered solutions **Price:** ¥4950 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with weatherproof precision! ## Quick Answers - **What is this?** Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box by sigma engineered solutions - **How much does it cost?** ¥4950 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/324122863-sigma-electric-engineered-solutions-gray-143854-1-2-inch-5) ## Best For - sigma engineered solutions enthusiasts ## Why This Product - Trusted sigma engineered solutions brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile 5-Hole Design:** Easily connect multiple conduits or mount lighting with precision. - • **Rugged Die-Cast Aluminum:** Built to withstand moisture and harsh environments without rusting. - • **Complete Hardware Included:** Mounting lugs and closure plugs ensure a hassle-free setup. - • **Pre-Installed Ground Screw:** Simplifies secure, code-compliant installations every time. - • **Weatherproof & NEMA 3R Rated:** Perfect for wet, damp, or dry locations—no compromises on durability. ## Overview The Sigma Electric 143854 1/2-Inch 5 Hole Round Box is a compact, die-cast aluminum junction box designed for versatile conduit connections and lighting mounts. Featuring five 1/2-inch knockouts, powder-coated corrosion resistance, and UL/CSA wet location certification, it ensures durable, secure installations in any environment. Complete with mounting hardware and a pre-installed ground screw, this NEMA 3R rated box is the professional choice for reliable electrical setups. ## Description Sigma's weatherproof round boxes provide a junction for conduits and can be used to mount lampholders and lighting systems. The rugged, die-cast construction prevents moisture penetration making the boxes suitable for wet, damp or dry locations. Boxes are powder coated for corrosion resistance and feature a ground screw for secure installation. Boxes include hardware, closure plugs and a pre-installed ground screw. Review: Works great - Great product tough holds up.. does the job! Review: Good quality - Worked very well ## Features - Provide a junction for conduits or can be used to mount lampholders and lighting systems - Features five 1/2-in knockouts and 16 cu. in. capacity - Includes mounting lugs, closure plugs and a pre-installed ground screw - Die-cast construction and powder coated for corrosion resistance - Product is UL and CSA listed, suitable for wet locations and NEMA 3R rated ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C3YD6JI | | ASIN | B00C3YD6JI | | Batteries Included? | No | | Batteries Required? | No | | Color | Gray | | Customer Reviews | 4.7 4.7 out of 5 stars (178) | | Customer reviews | 4.7 4.7 out of 5 stars (178) | | Date First Available | 22 November 2013 | | Date First Available | 22 November 2013 | | Finish | Powder Coated | | Included components | Sigma Electric 143854 1/2-Inch 5 Hole Round Box, Gray | | Installation Method | Screw-In | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 222 g | | Item model number | 143854 | | Item model number | 143854 | | Manufacturer | Sigma Electric | | Manufacturer | Sigma Electric | | Material | Aluminum | | Number of Holes | 5 | | Part number | 143854 | | Product Dimensions | 10.67 x 13.97 x 5.74 cm; 222 g | | Product Dimensions | 10.67 x 13.97 x 5.74 cm; 222 g | | Size | No Size | | Specification met | CSA, NEMA 3R, UL | | Style | Compact | ## Product Details - **Material:** Metal - **Brand:** Sigma Engineered Solutions - **Color:** Gray - **Style:** Compact - **Product Dimensions:** 2.26"D x 5.5"W x 4.2"H ## Images ![Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box - Image 1](https://m.media-amazon.com/images/I/710NwUH27hL.jpg) ![Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box - Image 2](https://m.media-amazon.com/images/I/71E5TvO8N7L.jpg) ![Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box - Image 3](https://m.media-amazon.com/images/I/71Gy3oNCnjL.jpg) ![Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box - Image 4](https://m.media-amazon.com/images/I/61DYrRBMFcL.jpg) ![Sigma Electric Engineered Solutions, Gray 143854 1/2-Inch 5 Hole Round Box - Image 5](https://m.media-amazon.com/images/I/61upFQNLLFL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by B***E on 13 April 2026* Great product tough holds up.. does the job! ### ⭐⭐⭐⭐⭐ Good quality *by B***D on 22 May 2026* Worked very well ### ⭐⭐⭐⭐⭐ Sigma Electric Round Junction Box worked out well *by C***X on 6 June 2024* this junction box is high quality and has all the needed plugs which makes it very flexible. I found it easy to work with and very sturdy. with the right connectors it can easily be watertight. I'd buy this again when I need one. ## Frequently Bought Together - Sigma Electric, Gray Sigma Engineered Solutions, 143854 1/2-Inch 5 Hole Round Box, No Size - SIGMA ENGINEERED SOLUTIONS 14250 Metal Electrical Outlet Box, Weatherproof, Easy Mount Plug and Receptacle Protector, Gray, (3) 1/2-Inch Holes, 1 Gang Box - ENERLITES 4” Diameter Round Weatherproof Cover, Blank Metal Wall Plate for Outdoor Use, Corrosion Resistant, Size 4.3” x 3.46", 7740-WP, Gray --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/324122863-sigma-electric-engineered-solutions-gray-143854-1-2-inch-5](https://www.desertcart.jp/products/324122863-sigma-electric-engineered-solutions-gray-143854-1-2-inch-5) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-06-23*