• This item is made to order and is non-returnable- Please call us at 888-794-1590 for exact lead times on this product

The Simpson CPT44SS is a concealed post base designed for 4x4 wood posts, delivering strength, clean aesthetics, and unmatched durability in outdoor and moisture-prone environments. Made from corrosion-resistant 316 stainless steel, this base elevates the post 1 inch above the concrete to reduce water damage and prolong structural life. Its hidden design makes it a top choice for premium deck and patio builds where appearance matters as much as performance.

Key Features

• Made from 316 stainless steel for superior corrosion resistance in harsh or coastal environments.
• Concealed design delivers a clean, finished look—ideal for architectural or wrapped post applications.
• 1" standoff height helps prevent moisture intrusion and post decay at the base.
• Load-rated for uplift, downward, and lateral forces to support structural integrity.
• Includes all necessary connector components in one box (anchors sold separately).

Applications

• Perfect for 4x4 wood post installations in decks, porches, patios, and basements.
• Ideal for environments with frequent exposure to moisture, splash zones, or salt air.
• Commonly used when a low-profile, concealed base is desired under column wraps or trim.

Installation

1. Place the CPT44SS base on the concrete surface, maintaining the 1" standoff height.
2. Install the knife plate and standoff components onto the anchor bolts (anchors not included).
3. Position the 4x4 post over the base and fasten it using the included connectors.
4. Tighten all hardware according to engineering specifications for structural compliance.

California Residents: WARNING