ModulAir L - 100mm (4") Inline Fan & Pipe Adapter

Part Number: MA-L-PIPE-102

This adapter links a 102 mm (4") inline fan or rigid ventilation pipe to your modular 100 mm fume extraction system. The design features a male twist-lock port compatible with ModulAir Large female parts and a stepped push-fit mount on the opposite side, allowing tight insertion into fan housings or ducts of various sizes.

The stepped section includes three fit zones to accommodate ducts with an external diameter of approximately 100 mm, 98 mm, and 96 mm, making it compatible with most standard 4" inline fan housings and rigid pipes, even those with slight dimensional variance.

No fasteners are needed: simply press the adapter into the fan duct or pipe. Add tape or sealant if needed for airtight operation.

For the hose side, use a flexible 100 mm (4") air duct such as standard PVC spiral hose.

🔗 ModulAir Collection

This part is part of the ModulAir modular air system, a comprehensive ecosystem of quick-connect adapters for workshop air handling.

Browse the full collection: https://makerworld.com/en/collections/7342813-modulair-modular-air-system

Find all Large compatible parts: https://makerworld.com/en/collections/7342813-modulair-modular-air-system?query=MA-L

🔧 Model Overview

• Interface Size: Large (connects to ModulAir Large female parts) 
• Pipe Size: 4 inch (102mm) nominal ventilation standard 
• Stepped Internal Fit: 100mm, 98mm, 96mm progressive diameters 
• ModulAir Connection: QuickLock bayonet (1/10 turn - 36°) 
• Pipe Connection: Friction fit (force insertion) 
• Compatible Pipe Types: Inline duct fans, rigid PVC pipe, metal ductwork, flexible aluminum 
• External Diameter Range: 96-100mm - Configuration: 4" Pipe/Fan → L Adapter → 100mm Hose

💡 Recommendations 

• Stepped internal diameter provides compatibility with various inline fans and pipes (96-100mm external diameter) 
• Insert pipe with force for friction fit, should feel snug
  •  If fit is too loose, wrap 1-2 layers of adhesive tape (duct tape, electrical tape) around the pipe before insertion 
• Perfect for connecting inline duct fans to flexible hose systems 
• Enables tool-free fan or pipe repositioning in workshop layouts 
• PETG or ABS recommended for durability and slight flex during insertion 
• ASA recommended for high-temperature applications 
• Ideal for creating negative pressure systems with flexible routing 

✨ CAD-designed and test-printed for reliable real-world use 

🛠️ Every model is refined before release 

💬 Have a custom request or question? Feel free to reach out! 

📦 Browse my full collection: @DASTERLIER