Door 1 x 4 x 5 with 4 Panes, Squared Base (LEGO Part 3861b)

Loading part #3861b…

LEGO Piece Identifier

The non-commercial AI-powered LEGO piece identifier, part catalog, and reference suite for builders, parents, and collectors worldwide.

Identification Tools

Authority & Guides

Trust & Transparency

Spinifywheel

LEGO® is a registered trademark of the LEGO Group of companies, which does not sponsor, authorize, or endorse this website. BrickFinder is an independent community reference project and is not affiliated with the LEGO Group.

Built for brick builders, parents, and collectors worldwide.