LEGO® Window 1 x 3 x 3 Flat Front 51239 is a black window frame element with a clean square opening and flat front profile for detailed building layouts. Its mould design creates a structured frame shape suitable for architectural scenes and building-focused creations.

LEGO® Window Frame Details

This window element uses a 1 x 3 x 3 proportion with a flat exterior surface and integrated connection points around the frame. The open center section allows window inserts and supports varied structural layouts.

Building Uses for Window Elements

• Modular buildings
• Architectural builds
• City structures and interiors
• Doors and window layouts

Browse additional frames, windows, and related elements here: Doors & Windows Collection