--- product_id: 97788566 title: "Carlon B618R-UPC 4-1/4\" Round Box, Old Work, Cubic Inches: 18\", Non-Metallic" brand: "carlon" price: "$31.89" currency: USD in_stock: true reviews_count: 13 category: "Carlon" url: https://www.desertcart.ec/products/97788566-carlon-b618r-upc-4-1-4-round-box-old-work store_origin: EC region: Ecuador --- # 18 cubic inches capacity for wiring space 4.25-inch diameter precision fit 2.75-inch depth with 4 integral swing clamps Carlon B618R-UPC 4-1/4" Round Box, Old Work, Cubic Inches: 18", Non-Metallic **Brand:** carlon **Price:** $31.89 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your space with the box that means business! ## Quick Answers - **What is this?** Carlon B618R-UPC 4-1/4" Round Box, Old Work, Cubic Inches: 18", Non-Metallic by carlon - **How much does it cost?** $31.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/97788566-carlon-b618r-upc-4-1-4-round-box-old-work) ## Best For - carlon enthusiasts ## Why This Product - Trusted carlon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Old Work Ready:** Designed specifically for retrofit projects, making renovations effortless and clean. - • **Secure Swing Clamps:** Four integral clamps provide rock-solid fixture support without extra hardware. - • **Spacious Wiring Capacity:** 18 cubic inches of room to handle complex electrical setups without crowding. - • **Precision Fit, Every Time:** 4-1/4" diameter ensures seamless installation with included stencil for perfect cutouts. - • **Durable Non-Metallic Build:** Phenolic material offers lightweight strength and corrosion resistance for long-lasting reliability. ## Overview The Carlon B618R-UPC 4-1/4" Round Old Work Box is a compact, non-metallic phenolic electrical fixture box designed for retrofit ceiling installations. With an 18 cubic inch capacity and 2-3/4" depth, it features four integral swing clamps for secure mounting. Its precision 4-1/4" diameter and included stencil ensure a perfect fit, making it a top choice for professional-grade electrical renovations. ## Description Part Number: 034481006237 Part: Carlon B618R-UPC 4-1/4" Round Box, Old Work, Cubic Inches: 18", Non-Metallic 4-1/4" Diameter 3/0 -4/0, Round Old Work Box with Swing Clamps, Non-Metallic, Depth: 2-3/4". Cubic Inches: 18". Integral Clamps: 4, Not UL Classified for Fire Resistance or used for Fixture Support in the Ceiling. Diameter:4 1/4 in Material:Non-Metallic, Phenolic Type:Old Work, Fixture Box, Ceiling Box Product Depth:2 3/4 in Cubic Inches:18 in Also known as: 034481006237, CARB618RUPC, Carlon, B618R-UPC, Round - Old Work, Ceiling/Fixture Boxes, Boxes - Non-Metallic, Boxes, Enclosures, 4" cut in box, 4" round cut in box, 4 O remodel, Union Box Equivalent to Review: Great product! - Works like a charm. I was renovating my bathroom and found that they had not used a box for the vanity light when they built the house. Unfortunately the studs were not close enough so I opted for one of these and glad I did. With a w.25 hole saw, I had the new light done in about an hour (assembly included). I WOULD definately purchase these again! Review: Perfect installation with the included stencil. - Nice size box for ceiling installation. Biggest convenient plus was the enclosed stencil for the electrical box. Cut out exactly to the stencil was a perfect fit. ## Features - Diameter:4 1/4 in - Material:Non-Metallic, Phenolic - Type:Old Work, Fixture Box, Ceiling Box - Product Depth:2 3/4 in - Cubic Inches:18 in ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DMSL9HV | | Best Sellers Rank | #35,068 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #61 in Electrical Outlet Boxes | | Brand | Carlon | | Brand Name | Carlon | | Capacity | 18 Cubic Inches | | Color | Blue | | Customer Reviews | 4.6 out of 5 stars 796 Reviews | | Finish Type | Polished | | Installation Type | Screw-In | | Item Dimensions D x W x H | 2.6"D x 4.25"W x 4.25"H | | Item Weight | 1.4 Pounds | | Manufacturer | Carlon | | Material | phenolic | | Model Number | B618R-UPC | | Part Number | B618R-UPC | | Product Dimensions | 2.6"D x 4.25"W x 4.25"H | | Specification Met | Ul | | Style | Compact | | UPC | 695526799905 | | Unit Count | 1.00 Pounds | ## Images ![Carlon B618R-UPC 4-1/4" Round Box, Old Work, Cubic Inches: 18", Non-Metallic - Image 1](https://m.media-amazon.com/images/I/41sDOWlceGL.jpg) ## Questions & Answers **Q: Where is this made? thanks** A: It's hard plastic, not metal. **Q: is the outer dimension 4 1/2" or does it fit a 4 1/2" hole?** A: Outer dimension is about 4 1/2” **Q: How much are there in one package** A: The quantity of each package is 1. **Q: can this product be used to mount an exterior lamp on a stucco surface?** A: Not likely. Exterior walls are quite thick, plus stuco could be even more thickness. This box has 3 tabs that secure it, but they only clamp maybe 1" deep. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product! *by I***' on March 1, 2025* Works like a charm. I was renovating my bathroom and found that they had not used a box for the vanity light when they built the house. Unfortunately the studs were not close enough so I opted for one of these and glad I did. With a w.25 hole saw, I had the new light done in about an hour (assembly included). I WOULD definately purchase these again! ### ⭐⭐⭐⭐⭐ Perfect installation with the included stencil. *by G***4 on December 13, 2025* Nice size box for ceiling installation. Biggest convenient plus was the enclosed stencil for the electrical box. Cut out exactly to the stencil was a perfect fit. ### ⭐⭐⭐⭐⭐ Quality is good *by T***Y on February 15, 2026* Great for adding a light to a finished ceiling. --- ## 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.ec/products/97788566-carlon-b618r-upc-4-1-4-round-box-old-work](https://www.desertcart.ec/products/97788566-carlon-b618r-upc-4-1-4-round-box-old-work) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-06-21*