The Simpson MAB15Z ZMAX Galvanized Mudsill Anchor by Simpson is a one-piece steel connector engineered to securely anchor a mudsill to concrete block, poured concrete wall, or slab foundations - serving as a practical alternative to traditional anchor bolts. Designed to mount directly on forms before the pour, it streamlines the installation process, makes finishing easier, and eliminates the frustration that comes with misplaced anchor bolts. Because it is a single piece, there are no separate nuts or washers to lose on the job site.

Key Features

• Anchors mudsill to concrete block, poured walls, or slab foundations - broad foundation compatibility means this connector works across the most common residential and light commercial foundation types without requiring a different product for each application.
• Accommodates nominal sill sizes of 2x4, 2x6, 2x8, 2x10, and 2x12 - wide size range gives framers the flexibility to use a single anchor solution across varied mudsill framing configurations on the same project.
• Made from 18-gauge steel - provides the structural integrity needed for a reliable mudsill-to-foundation connection while keeping the anchor manageable to handle and position on forms.
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications - the heavier galvanized coating stands up to the moisture and chemical exposure common in below-grade and pressure-treated lumber environments, helping the connection maintain its integrity over time.
• One-piece design with no nuts or washers - fewer components mean fewer parts to misplace, fewer steps to complete, and a faster overall installation compared to traditional anchor bolt assemblies.
• Mounts on forms before the concrete pour - positioning the anchor at the forming stage eliminates the guesswork and rework associated with misplaced anchor bolts, keeping the project on schedule.

Why This Product

• Eliminates the most common anchor bolt headache - because the MAB15Z mounts on forms before the pour, contractors avoid the costly problem of anchor bolts set in the wrong location, saving time and reducing the risk of rework on stemwall, slab, and poured wall foundations.
• Built for corrosive environments - the ZMAX galvanized finish goes beyond standard galvanizing to deliver meaningful corrosion resistance where it matters most: exterior conditions and installations involving treated wood where moisture and chemical exposure are a constant concern.
• One product covers a wide range of mudsill sizes - compatibility with nominal sill sizes from 2x4 through 2x12 means this connector adapts to different framing configurations, reducing the number of SKUs a contractor needs to carry to the job site.
• Simplified, all-in-one installation - the single-piece construction removes nuts and washers from the equation entirely, cutting down on loose hardware and streamlining the process from form-setting through finishing.

Specifications

• Model Number: MAB15Z
• Gauge: 18
• Coating: ZMAX
• Finish: ZMAX
• Member Size: 2x4, 2x6, 2x8, 2x10, 2x12
• Install With: 10d x 1-1/2 in. nails
• Country of Origin: United States

Approved Applications

• Stemwall foundations
• Concrete block (CMU) foundations
• Poured concrete wall foundations
• Slab foundations
• Exterior applications requiring corrosion resistance
• Treated-wood applications

Frequently Asked Questions

What foundation types is the MAB15Z compatible with?

The MAB15Z is suitable for use with concrete block (CMU) foundations, poured concrete walls, and slab foundations, giving it broad compatibility across common residential and light commercial foundation types.

What lumber sizes can the MAB15Z accommodate?

The MAB15Z is designed for nominal sill sizes of 2x4, 2x6, 2x8, 2x10, and 2x12, making it versatile for a wide range of mudsill framing configurations.

Why choose the MAB15Z over traditional anchor bolts?

The MAB15Z mounts directly on forms before the concrete pour, eliminating the risk of misplaced anchor bolts. Its one-piece design also means there are no separate nuts or washers to lose, and it makes finishing easier compared to traditional anchor bolt installations.

What does ZMAX galvanization mean for this product?

ZMAX galvanization provides an extra layer of corrosion resistance beyond standard galvanizing, making the MAB15Z well suited for exterior applications and installations involving treated wood where moisture and chemical exposure are a concern.