The Simpson CBSTQ44Z-SDS2 CBSTQ Standoff Column Base is a cast-in-place post base from Simpson engineered to deliver enhanced strength and stability for 4x4 wood posts in residential and light commercial construction. Built with a code-required 1 in. standoff and protected by ZMAX galvanization, this column base provides a dependable, moisture-resistant connection between wood posts and concrete foundations - making it a reliable choice for decks, pergolas, carports, and other structural framing applications.

Key Features

• Code-required 1 in. standoff design that elevates the post above the concrete, protecting it from moisture and resisting rot - keeps the post end clear of standing water and concrete contact, helping the structure meet building code requirements while significantly extending post service life
• S-shaped bearing tabs that provide increased strength, allowing for higher downloads - delivers greater load capacity than previous designs, giving builders and engineers more flexibility when specifying connections for demanding structural loads
• Strong-Drive SDS Heavy-Duty Connector screws (included) provide a greater wood net section area than bolts - the 14 included 1/4 in. x 2 in. SDS screws create a stronger mechanical connection while preserving more of the post's structural wood fiber compared to traditional bolt installations
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications - the heavy-duty zinc coating stands up to the chemicals in pressure-treated lumber and the demands of outdoor environments where standard galvanized finishes may fall short
• Dual-gauge steel construction - base 12, strap 10 - the heavier strap gauge adds rigidity and uplift resistance where it matters most, balancing strength and material efficiency throughout the connector

Why This Product

• Everything needed for installation is included - the 14 Strong-Drive SDS screws ship with the base, so there is no need to source compatible fasteners separately, reducing the chance of mismatched hardware on the job site
• Built to last in harsh outdoor conditions - ZMAX galvanization provides a higher level of corrosion protection than standard coatings, making this post base a sound long-term investment for exterior decks, covered structures, and applications involving pressure-treated wood
• Engineered for higher load performance - the S-shaped bearing tabs increase download capacity compared to earlier column base models, making this connector suitable for structurally demanding residential and light commercial framing projects
• Moisture management built into the design - the 1 in. standoff actively separates the post end from concrete, addressing one of the most common causes of premature wood decay in post-to-foundation connections and helping structures maintain their integrity over time

Specifications

• Model Number: CBSTQ44Z-SDS2
• Member Size: 4x4
• Gauge: Base 12; strap 10
• Width 1: 3-9/16 in.
• Width 2: 3-1/2 in.
• Height: 8-3/8 in.
• Depth: 7-1/8 in.
• Coating/Finish: ZMAX
• Install With: Install with (14) 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws (included)
• Country of Origin: United States

What's Included

Each pack contains (1) CBSTQ44Z-SDS2 ZMAX Standoff Column Base, (14) 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Frequently Asked Questions

What is the purpose of the 1 in. standoff on the CBSTQ44Z-SDS2?

The 1 in. standoff design elevates the wood post above the concrete surface, complying with building code requirements and protecting the post end from moisture contact that can lead to rot over time.

What type of fasteners are used to install the CBSTQ44Z-SDS2?

The CBSTQ44Z-SDS2 is installed with (14) 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the product. These screws provide a greater wood net section area than bolts for a stronger connection.

Why is the ZMAX coating important for this column base?

The ZMAX galvanization provides extra corrosion resistance, making the CBSTQ44Z-SDS2 especially suitable for exterior applications and use with pressure-treated wood, where standard coatings may be insufficient against chemical and moisture exposure.

What post size is the CBSTQ44Z-SDS2 designed for?

The CBSTQ44Z-SDS2 is designed for a nominal 4x4 column size, with a W2 dimension of 3-1/2 in. to properly accommodate standard 4x4 lumber in residential and light commercial construction applications.

Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.