Double INBXX Middle Door Trim / Seal

Double INBXX Center Door Trim

Why does this exist?

The double INBXX has a gap between its two doors and the center 2020 extrusion. This trim fills that space for a cleaner finished look and to better seal the doors against air leakage. It doesn't make this a sealed box, but it is better than having a 5+mm gap between the doors.

The Design

This is a ground-up rebuild of the INBXX Double Door Trim Mod. On my build, the original sat more than 1 mm too tall for the doors to close properly, and its single center screw let the ends bow out, making the issue worse.

I lowered the height added mounting more points and keyed it to the extrusion for easier install. The new shape is more angular to match the INBXX, and dovetails hold the end and center pieces in place during installation.

I’ve printed and installed both versions: A "Single Piece" version with only 1 cross bar, and a "Multi-Piece" version that’s easier to print, adds a 3rd mounting screw, and a center trim piece for a different look. Editable CAD is included for those who wish to customize their build.

Hardware Required:

• M3x8 Screws (2x for single piece vers., 3x for multi-piece vers.):

• M3 Hammerhead T-Nuts:

• Filament:

• 3D Printer:

Print Parameters:

• .2mm Layer Height

• 2-3 Walls / Perimeters

• 20% Infill (Cubic Recommended)

• NO Supports Required

• Print in the same filament you used for INBXX.

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