IPEX Scepter® RBox™ PVC Round Electrical Box

April 1, 2026

The Scepter^® RBox™ is IPEX’s upgraded round electrical box designed as the next generation of the OB15, making installations faster, easier, and more reliable. Built from high‑impact, corrosion‑resistant PVC, it’s fully non‑metallic and ready for wet‑location use. It also includes several contractor‑driven improvements that boost durability, capacity, and convenience.

The RBox™ features IPEX’s patent-pending KwikTab™ fasteners, designed for easy hand closure and #2 Phillips screwdriver-assisted lid opening. It has a press-in lid with integrated O-ring for easy installation and wet-location compatibility. The 4” x 2” molded box includes 3/4” hubs and offers 28% more internal volume than the current octagonal box.

An additional advantage of the RBox™ is its updated plug design which features a cut-out on the surface for easy insertion with the thumb into the hub (hub plugs are also available for purchase separately). The mounting feet have been re-engineered parallel and rounded to be more convenient and able to fit onto a 2×4 piece of wood, while including a fine-tuning tab for installation flexibility and adjustments.

Features

• Fully non‑metallic, high‑impact PVC construction for indoor and wet‑location applications
• KwikTab™ fasteners for quick hand closure and easy #2 Phillips screwdriver opening
• Press‑in lid with integrated O‑ring for fast, reliable sealing
• 4″ x 2″ molded box with 3/4″ hubs and 28% more internal volume for easier wiring
• Updated plug design with a thumb insert cut‑out for quick removal  (plugs also sold separately)
• Re‑engineered mounting feet—parallel, rounded, and sized for 2x4s—with a fine‑tuning tab for easier alignment and installation adjustments

Specifications

• The Scepter^® RBox^TM is acceptable for indoor and outdoor (wet location rated) use and manufactured of PVC in a gray color analogous to Rigid PVC conduit and fittings.
• The RBox is entirely non-metallic providing exceptional corrosion resistance.
• The RBox is certified to both CSA C22.2 No. 85 and UL 514C by a Nationally Recognized Testing Laboratory (CSA), ensuring the quality and performance that customers are accustomed to.