fan holder XL universal for absorption refrigerator

19-2-2026
Small update on the knobs and the hooks: the fan holder has extra support in the tracks for the hooks.

Universal Fan Holder for Absorption Fridges Extra large.

After many trials, errors, and prototypes for the XL version, I've developed an improved universal fan holder for absorption refrigerator with extra fans for better airflow

In this project file, you'll find two versions:

• A triple 80mm fan holder for smaller vents

• A double 120mm fan holder for larger vents

• sensor mount

Improvements

• Reduced filament usage

• Improved connector boxes on the protective frame for easier wiring

Connecting the Fans:

• Solder the pre-crimped wires to the fan's power wires (+ and -)

• If using a 3-pin fan:

  • Cut off the RPM wire and solder only the positive and negative

  • Or, if you want to use it, solder the PWM wire to the white cable and middle pin of the JST-XH 3-pin connector.

Inside the Connection Box:

• Mount the male connectors into the slots

• Solder the wires to the 3-pin connector and to the LED

Note: The connector box is designed for both the 80mm and 120mm fan versions.
It includes:

• JST-XH 5-pin (2.0mm pitch) male connector on one side

• JST-XH 3-pin (2.54mm pitch) male connector on the other side

Use the female versions of the same connectors for the wiring to this box.

Print Guide

• Material: PETG or ABS (PLA is not heat resistant enough for fridge environments)

• Infill: 24% (any pattern) 

• Walls: 3

• Top & Bottom Layers: 4

• Supports: Yes

Orientation Tips:

• Stand the holders vertically and at an angle across the bed

• If using a Bambu H2D, you can lay them flat

Required Tools

• 1x Allen key (hex key) for the panhead screws

• 1x Hobby knife (for cleaning and trimming printed parts)

Parts List

80mm Fan Version

• 3x 80mm fans

• 12x M3 x 35mm panhead screws for the fans

• 4X M3 x 20 or 25mm panhead screws for the hooks 

• 20x M3 nuts

• 1x JST 2.0 PH 5-pin pre-made cable set

• 1x 3-pin JST XH2.54 male connector

• 1x 5mm LED with 100-ohm resistor

• 1x KSD302 16A 250V 40°C thermal switch

120mm Fan Version

• 2x 120mm fans

• 8x M3 x 35mm panhead screws for the fan.

• 4x M3 x 20 or 25mm panhead screws for the hooks.

• 16x M3 nuts

• 1x JST 2.0 PH 5-pin pre-made cable set

• 1x 3-pin JST XH2.54 male connector

• 1x KSD302 16A 250V 40°C thermal switch