Prusa i3 MK3S+/MK4 MMU3 External Enclosure V2 - Precision Engineered for Enhanced Printing

The Prusa i3 MK3S+/MK4 MMU3 External Enclosure V2 by Clearview Plastics is a newly redesigned solution tailored for your Prusa i3 MK3S+ or MK4 with MMU3. Evolving from two years of user feedback, this enclosure offers an easy setup for beginners while delivering advanced features to elevate your 3D printing experience. It measures 476mm Wide x 571mm Deep x 521mm Tall (18.75" W x 22.5" D x 20.5" H), providing a cleaner, healthier, and high-performance printing environment.

What's Included:

• Panels:
  • Base Option: 1/8" thick, optically clear acrylic panels for a clear view of your print progress, with a 5-sided design for optimal protection.
  • Upgrade Option: Upgrade to 1/4" Commercial grade panels for added strength and customization:
    • White PVC with Clear Acrylic Front
    • Full Clear Acrylic - The best overall option for finish and function
    • Smoked Tinted Acrylic - Same as clear acrylic with a premium look
    • Polycarbonate for high-temperature resistance
    • Amber Orange for UV protection in resin printing
• Hardware: All necessary screws, nuts, and connectors for a hassle-free assembly.
• STL Files: Print your own parts or opt for our pre-printed Black PETG parts (STL files included with every order for custom colors).

Assembly and Customization:

• Printed Parts Kit: Included STL files allow you to print your own parts or opt for our pre-printed Black PETG parts for immediate assembly. This screw-together design assembles in minutes with no heavy modifications—optional external PSU mount included for high-temp printing, requiring just a few screws.

ASSEMBLY INSTRUCTIONS

The Prusa i3 MK3S+/MK4 MMU3 External Enclosure V2 blends simplicity with advanced functionality. Built from user feedback, it offers a dustless, temperature-controlled chamber for better prints, easy access for maintenance, and optional upgrades like an external PSU mount to extend your printer’s longevity—perfect for both newbies and seasoned enthusiasts.

Air Quality and Ventilation:

• Air Filtration Options:
  • Exhaust HEPA Filter with charcoal, expelling contaminants outside your workspace.
  • Recirculating HEPA Filter to keep your print chamber clean and dust-free.
  • Intake HEPA Filter to ensure only clean, dust-free air enters the enclosure.
• Ventilation Accessories:
  • Exhaust Fan with easy-to-install housing for a 4" hose, paired with our Window Insert for direct outdoor ventilation.

Additional Customization:

• LED Lighting for better visibility of your prints.
• Heavy Duty Metal Hardware for a more robust build.
• 6th Base Panel for an even more sealed environment.
• Dampening Pads and Vibration Dampening Pads to reduce noise and vibration.
• Bowden Tube by the meter for customized filament management.
• Options for Venting Fumes and VOCs to maintain a safe working environment.

Why Choose Our Prusa i3 MK3S+/MK4 MMU3 Enclosure V2?

• Precision Fit: Tailor-fit for the Prusa i3 MK3S+/MK4 MMU3 at 476mm Wide x 571mm Deep x 521mm Tall (18.75" W x 22.5" D x 20.5" H), ensuring no gaps for dust or temperature inconsistencies.
• Enhanced Print Quality: A self-heated chamber prevents warping, improves adhesion, and maintains consistent temperatures.
• Healthier Workspace: Reduce noise, smells, and fumes for a cleaner, safer printing area.
• Noise Isolation: Effectively minimizes noise from your Prusa printer for a quieter experience.
• Frame-less Door Design: Features a large hinged door with magnetic stops, plus top and back filament ports, for easy access and optimal performance.
• Plug-and-Play Compatibility: Wide filament ports on top and back, plus an optional external PSU mount with no rewiring—ideal for high-temp materials.
• Comprehensive Kit: Includes panels, hardware, and STL files—everything you need, with a panels-only option for DIY enthusiasts.

Transform your Prusa i3 MK3S+ or MK4 with MMU3 into a professional-grade printing station with Clearview’s External Enclosure V2. Designed for ease and excellence, it delivers a controlled, clean, safe, and quiet printing environment tailored to your needs.

As a small business proudly owned and made in the USA, we deeply appreciate your support. We’re dedicated to providing exceptional service to ensure your satisfaction. Our enclosures come with a 100% satisfaction guarantee and a 1-year warranty against manufacturer defects. Built by 3D printer enthusiasts for 3D printer enthusiasts, we understand your needs and are committed to delivering quality products that enhance your printing experience. Thank you for choosing us; we’re here to make sure you’re happy with your purchase.

Who We’ve Worked With

More About the Clearview Infinity Enclosure

Our main objective was to give your printer an unobstructed view from any angle. At the same time, our enclosures offer easy access with a magnetically latched front door and a cable port to route all your connections. A fitted port for your power supply unit uses cool exterior air to extend your printer’s longevity—especially useful with the optional external PSU mount.

We also have adapted options for our Carbon Air Scrubbing filter and vibration dampening feet. Both do as they suggest. The Carbon Air Scrubbing Filter uses a silent fan to pass air through a carbon filter to reduce fumes created from the 3D printing process—essential for ABS printing. Our Vibration Dampening Feet use a multi-material lamination that dissipates vibrations at 5 different levels, perfect for reducing noise in any setting.

We offer a black or Prusa Orange color option for the brackets and fittings. With your purchase, we provide STL access so you can print these fittings in your preferred colors. Additionally, we offer STL files for future attachments and accessories—if we create a mod, you get it for free!

This makes a great gift for the 3D printing tinkerer within your friends or family.
If you’ve had problems with parts adhering to the print bed, warping, bad smell, noise, or dust, this enclosure is the right answer.

While 3D printing is a fun, productive activity, it comes with nuisance factors:
-It can be loud at home.
-Drafts or temperature changes can lead to warping, print issues, and poor adhesion.
-Molten plastics release VOCs that are unhealthy, especially for kids.

Our enclosure sets up a safe, productive 3D printing environment with a sleek look. It includes all parts needed to assemble in about 30 minutes with provided instructions. The front door offers generous access to the print bed and controls, while a wide rubber grommet manages your power cable and USB. PETG parts and hardware complete the setup—start printing right away!

Need more information on printing with enclosures? Check these links:

• Benefits of printing with an enclosure
• 3D printing health Government guidelines
• Additional Health studies
• Getting Better prints with an enclosure

**BONUS** As the 3D print world changes, so does our enclosure. We’ll give you access to download STL updates to our parts database, letting you print updates, add-ons, and mods for free!

FAQ

What is your return Policy?

We have a 30 day return policy. Unused, undamaged panels that still have the masking fully attached are eligible for a full refund less return shipping. If panels are damaged (after shipment) or the protective mask layer has been removed, we cannot offer a refund. For best results in ensuring fitment and to ensure you like the setup of our enclosures, consider at least partially assembling with the mask on. If it’s not for you, this allows a full refund.

Why would I order Polycarbonate vs. Acrylic?

Panel choice is the only feature you can’t change later. First, 1/4" panels are our top upgrade—get them if nothing else. Polycarbonate is impact resistant, while acrylic is scratch resistant. Acrylic works for most filaments, including high-temp ones like ABS, ASA, and PC. Polycarbonate is only needed for chamber temperatures above 60°C.

Why would I go for a Recirculating Filter vs. an Intake/Exhaust Setup?
It depends on your filaments. For PLA/PETG, we recommend Intake and Exhaust filters to control temperature and vent fumes outside with a 4" hose. For higher-temp filaments (ASA/ABS and above), our Recirculating filter excels, reducing fumes and smells with activated charcoal and a HEPA filter while maintaining heat.

There are some differences between your product pictures.

We update often, and as a small business, fresh photoshoots for every iteration aren’t feasible. Function stays constant or improves. For the clearest view of the current version, rely on the renderings rather than photos.