The Prusa XL is a powerhouse of a printer — but its stock Buddy Box cover traps heat in the buddy box. With no ventilation and no airflow, the electronics enclosure at the back of the machine traps heat, pushing MCU temperatures higher than they should be and risking thermal throttling or instability during long print sessions or in warm environments. If you want the best possible thermal management for your Prusa XL Buddy Box with the whisper-quiet performance Noctua is famous for, this is your upgrade. Bartallama3D’s Noctua-compatible Ventilated Cover pairs a precision-cut steel replacement cover with a dedicated mount for the Noctua NF-A6x25, and includes a 24V to 12V converter board so your Noctua fan runs perfectly off the Prusa XL’s native power supply.

Built around a steel cover with purpose-designed ventilation cutouts, this upgrade replaces the stock steel cover with something that actually manages heat. The included 24V -> 12V step-down converter plugs directly into your Prusa XL power terminals and has a 4-pin power header to connect a Noctua NF-A6x25 Fan (Fan Not Included).

Features & Specs

• Steel ventilated Buddy Box cover — replaces the stock Prusa XL Buddy Box cover
• Compatible with Noctua NF-A6x25 fan (fan not included)
• Includes 24V → 12V converter board for seamless integration with the Prusa XL power supply
• Purpose-designed ventilation cutouts for maximum airflow through the enclosure
• Reduces MCU and board temperatures during extended print sessions
• Ideal for workshop or home environments where noise levels matter
• No permanent modifications to your printer

What’s in the Box

• Assembled Bartallama3D steel ventilated Buddy Box cover with 24V -> 12V step-down converter pre-installed
• Fan Cover for the Noctua NF-A6x25 Fan or other 60x60x25 4-Pin Fan (fan not included)
• HEX Tool + Assembly Hardware
• Zip Ties

*** This is a custom-designed accessory for the Prusa XL. We are not affiliated with, endorsed by, or collaborating with Prusa on this accessory.