Brick 1x4 Without Bottom Tubes 3066

The LEGO® Brick 1x4 without bottom tubes (3066) is a structural element defined by its open underside and standard four-stud top connection. Unlike traditional bricks, this version removes the internal support tubes, creating a hollow interior that changes how the element connects and aligns within builds.

Brick 1x4 Without Bottom Tubes Design

This 1x4 brick features a rectangular body with four top studs and a completely smooth inner underside. The absence of internal tubes reduces internal contact points, allowing for different connection behavior compared to standard bricks while maintaining full compatibility with the LEGO® system.

LEGO® Element Structure and Function

The open underside design allows the brick to sit over studs or elements that would normally be blocked by internal supports. This makes it suitable for alignment adjustments, layered construction, and situations where spacing and positioning need more flexibility.

• Element type: Brick 1x4
• Part number: 3066
• Four top studs with open internal cavity
• No internal bottom tubes
• Compatible with standard LEGO® connections

Applications in Modular and Structural Builds

This element is commonly used in modular buildings and structured layouts where internal clearance is required. The hollow underside allows it to integrate cleanly into layered designs and architectural assemblies.

Explore more options in the transparent bricks collection or browse the LEGO® bricks collection for additional elements.