Technic Brick 4 x 6 Open Centre Frame (32531)

The LEGO® Technic 4 x 6 open-centre brick (32531) forms a rectangular studded frame with a large opening through the middle. Round Technic pin holes run along the outer sides, while studs around the top perimeter let the frame join conventional brick-built structures.

Open Frame with Technic Connections

Unlike a solid 4 x 6 brick, this element leaves the centre clear while providing a continuous border for construction. The short ends have three round side holes, and the longer edges offer additional connection positions. The open underside shows internal supports that follow the perimeter of the frame.

Each colour variant is sold as an individual piece; photos showing two frames illustrate the mould. Find related elements in our LEGO® Technic bricks collection.