Dura-Block AF4410 Black Marine Sanding Block – Long Block for Flat & Curved Panels

Overview

The Dura-Block AF4410 Black Marine Long Block is designed for precision sanding on large panels. Its generous 30" length and slim 2-5/8" width let you cover expansive surfaces with steady, controlled pressure. The black marine finish adds a professional touch to busy shop workflows, while the block’s durable shape holds up under repeated use on demanding projects.

Designed for curves and corners

This long block is built to follow both flat surfaces and gentle contours, maintaining consistent contact from edge to edge. Whether you’re tackling a straight panel or a subtle bend, you’ll experience a smooth, continuous blocking line that helps you avoid gouges and high spots.

Professional-grade build and global use

Used worldwide in professional body work, the AF4410 is crafted for long sessions and large panels. The long form supports efficient blocking across expansive areas without sacrificing control, making it a reliable choice for busy shops and skilled technicians alike.

Key specifications

• Follows curves or flat surfaces
• Used worldwide, wherever professional body work is done
• Uses 2-3/4" Width PSA paper in cut lengths or rolls
• 30" length x 2-5/8" width x 1-1/2" height

What to expect in practice

Expect a tool that supports efficient blocking on large surfaces with a balanced feel. The long block helps you span wide areas in fewer strokes, while still allowing precise control along edges and gentle curves. The combination of size, shape, and compatibility with PSA paper makes it a practical addition to panel sanding work.

How to use

• Attach 2-3/4" PSA paper to the block or cut to length for the job.
• Position the block along the panel and apply even pressure as you glide.
• Work in smooth, overlapping passes to maintain a consistent plane.
• Switch directions gradually to avoid creating waves on curved sections.

With its long form and robust build, the AF4410 is a versatile option for large-panel projects where control over both flat sections and mild curves matters. While results depend on technique and material, this long block is designed to support steady blocking across a range of body work tasks.