The Simpson PPB66-4Z PPBZ Porch Post Base from Simpson is engineered for one-time, pre-pour installation that supports permanent porch framing through every stage of construction - without the need for temporary vertical support. Sized to fit a nominal 6x6 post over a 4 in. slab, this connector lets the concrete contractor complete the slab pour independently after the framing is in place, eliminating the need for the framer to return to the jobsite. Built from 12-gauge steel with ZMAX galvanization, it delivers lasting corrosion resistance for exterior porch columns and treated-wood applications.

Key Features

• Stiffened embedded side stirrups provide temporary vertical download support without being embedded into concrete - the post base carries construction loads before the slab is poured, removing the need for separate temporary shoring and keeping your schedule on track.
• 1 in. standoff at the post or column base - keeps the end grain of the post elevated above the slab surface, reducing moisture contact and the potential for decay over time.
• Pre-pour fastening to the footing with Titen Turbo masonry screws - secures the base during the framing phase so the concrete pour can happen later without requiring trades to coordinate a return visit.
• Eliminates additional move-ins by trades and reduces inspection callbacks - the streamlined, single-installation workflow simplifies subcontractor scheduling and keeps the project moving efficiently.
• Sized to fit a nominal 6x6 post and 4 in. slab thickness - purpose-built dimensions mean no guesswork or field modification for standard porch post applications.
• Made from 12-gauge steel - provides the structural integrity needed to support the weight of most framed porches and overhangs prior to embedment in concrete.
• ZMAX galvanization for extra corrosion resistance - specifically suited for exterior environments and use alongside treated lumber, helping the connector hold up against moisture and the elements for the long term.

Why This Product

• Eliminates temporary support entirely - the stiffened side stirrups are designed to carry vertical construction loads before the slab is poured, so you never need to set up, maintain, or remove temporary shoring during porch framing.
• Keeps multiple trades on schedule - because the framer installs once and the concrete contractor pours independently at a later stage, there is no forced overlap or waiting between subcontractors, reducing costly delays and callbacks.
• Built for exterior durability with treated wood - ZMAX galvanization delivers an elevated level of corrosion protection that standard finishes do not offer, making this base a dependable long-term choice for outdoor post and column connections exposed to the elements.
• Purpose-designed fit for common porch construction - with dimensions matched to a nominal 6x6 post and a 4 in. slab, and the added benefit of a 1 in. standoff to guard against post-end decay, this connector addresses the most practical concerns of porch post installation in a single, ready-to-install component.

Specifications

• Model Number: PPB66-4Z
• Member Size: 6x6
• Depth: 4 in.
• Width 1: 5-5/8 in.
• Width 2: 5-3/16 in.
• Height: 5-3/4 in.
• Gauge: 12
• Coating: ZMAX
• Finish: ZMAX
• Country of Origin: United States

Install With

• Install with (12) 0.148 in. x 3 in. Strong-Drive SCN Smooth-Shank Connector nails (Model: 10DHDG) and (2) 1/4 in. x 1-1/4 in. Titen Turbo concrete screws (Model: TNT25114H)

Frequently Asked Questions

How is the PPB66-4Z porch post base installed prior to the concrete pour?

The porch post base is fastened to the footing using two 1/4 in. x 1-1/4 in. Titen Turbo masonry screws when framing the porch roof. Once secured, the concrete contractor can complete the porch slab pour at a later stage without requiring the framer to return to the jobsite after the slab has hardened.

Does the PPB66-4Z require temporary vertical support during construction?

No. The stiffened embedded side stirrups are designed to provide temporary vertical download support without being embedded into concrete, which means temporary vertical support is not needed. This eliminates disruptions to scheduling and reduces the need for additional trade move-ins.

What corrosion protection does the PPB66-4Z offer for exterior use?

The PPB66-4Z features ZMAX galvanization, which offers extra corrosion resistance specifically suited for exterior and treated-wood applications, making it a durable choice for porch framing exposed to the elements.

What post size and slab thickness is the PPB66-4Z designed for?

The PPB66-4Z is sized to fit a nominal 6x6 post and is designed for use with a 4 in. slab thickness. The 1 in. standoff built into the base also helps reduce the potential for decay at the post or column ends.

Note: Product dimensions may differ from picture.