# Steel City 4 in. 21 cu. in. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)

**Brand:** [Steel City](https://shop.coreranger.com/brands/Steel%20City)
**Model #:** 531511234UB-25R
**SKU:** HD-206166716
**Price:** $7.45 · in stock
**URL:** https://shop.coreranger.com/product/steel-city-4-in-21-cu-in-steel-pre-galvanized-square-box-extension-ring-531511234ub-25r-206166716

## Specifications

| Spec | Value |
|---|---|
| Box Type | Extender |
| Material | Steel |
| Pack Size | 1 |
| Returnable | 90-Day |
| Product Depth (in.) | 4 in |
| Product Height (in) | 1.5 |
| Product Width (in.) | 4 in |
| Manufacturer Warranty | Yes |
| Metallic/Non-Metallic | Metallic |
| Certifications and Listings | UL Listed |

## Description

Metallic outlet boxes provide innovative and efficient solutions for electrical rough-in. Innovative bracket designs simplifies the process of positioning and mounting electrical outlet boxes. Product is made from durable steel. Pre-galvanized coating to protect the steel to prevent corrosive substances from reaching to it.

• Galvanized coating resists corrosion
• Made from high-grade steel for lasting use
• Innovative bracket design facilitates convenient mounting