The Simpson Outdoor Accents RPBPC ZMAX Black Powder-Coated Retrofit Post Base for Double 2x4 is a structural connector engineered to reinforce existing posts and columns at the base connection, as well as to strengthen new post-base connections in carports, patio covers, trellises, decks, and similar outdoor structures. Built from 12-gauge steel with a ZMAX galvanized finish and a black powder-coat topcoat, this retrofit base delivers superior corrosion resistance alongside a refined appearance suited for visible, exposed applications. A single versatile model accommodates any post constructed from a double nominal-2x4 or larger, and when paired with the CPS composite plastic standoff, it meets a 1 in. post standoff code requirement - making it a practical choice for both retrofit upgrades and new construction.

Key Features

• Retrofit-ready design - fits over existing posts and columns without requiring full disassembly, saving time and labor on upgrade projects
• Versatile sizing for double nominal-2x4 or larger posts - one model covers a wide range of post configurations, reducing the need to stock multiple connector sizes
• Reinforces post-base connections against wind and seismic forces - adds structural integrity to carports, patio covers, trellises, and decks where lateral loads are a concern
• 12-gauge steel construction - provides the structural strength needed for demanding post-base applications in both retrofit and new builds
• ZMAX galvanized steel with black powder-coat finish - the dual-layer protection resists corrosion in outdoor environments while the black finish suits decorative and visible installations

Why This Product

• One connector, broad compatibility - the single RPBPC model fits any post made from a double nominal-2x4 or larger, so it adapts to a variety of structural column sizes without requiring multiple SKUs or guesswork at the job site
• Upgrade existing structures without starting over - because the RPBPC is specifically designed to reinforce existing posts and columns, it lets homeowners and contractors add meaningful structural support to older carports, patio covers, and decks without full reconstruction
• Dual-layer corrosion protection built for outdoor exposure - ZMAX galvanization combined with a black powder-coat finish gives this connector superior resistance to the moisture and weathering conditions common in outdoor post-base applications
• Code-compliance ready with the right accessory - when installed with the CPS composite plastic standoff, the RPBPC meets a 1 in. post standoff code requirement, helping projects stay on track during inspection

Specifications

• Model Number: RPBPC
• Member Size: Double 2x4
• Gauge: 12
• Coating: ZMAX
• Finish: ZMAX Galvanized with Black Powder Coat
• Country of Origin: United States
• Install With: Installs with 1/4 in. x 1-1/2 in. Outdoor Accents Heavy-Duty Connector screws, sold separately (Model: SDS25112DBB)

Approved Applications

• Reinforcing existing posts and columns at the base connection
• Braced carports requiring post-base reinforcement
• Patio covers and patio structures
• Trellises and decorative outdoor structures
• Decks and other outdoor construction projects
• Any application requiring a post-base connection for a double nominal-2x4 or larger post

Frequently Asked Questions

What post sizes is the RPBPC compatible with?

The RPBPC is a single, versatile model that will fit on any size post consisting of a double nominal-2x4 or larger, making it adaptable to a wide range of structural applications.

Does the RPBPC meet post standoff code requirements?

Yes. When installed with the CPS composite plastic standoff, the RPBPC meets a 1 in. post standoff code requirement.

What type of corrosion protection does the RPBPC offer?

The RPBPC is manufactured with ZMAX galvanized steel, which provides superior corrosion resistance. It also features a black powder-coat finish that adds an additional layer of protection along with a stylish appearance suited for visible outdoor installations.

What fasteners are recommended for installing the RPBPC?

The RPBPC installs with 1/4 in. x 1-1/2 in. Outdoor Accents Heavy-Duty Connector screws, sold separately (Model: SDS25112DBB).

Related Products

• SDS25112DBB - 1/4 in. x 1-1/2 in. Outdoor Accents Heavy-Duty Connector Screws (required for installation, sold separately)