This adapter fits DIRECTLY onto the back of the XTOOL F1 / F2 ULTRA, and the inlet/outlet of the xTool Inline Fan 2 (IF2), xTool Air Purifier 2 (AP2) and allows you to connect a 4 inch (~101mm) hose. 

It does not connect to the XTOOL F1 ULTRA hose. If you want to use the F1 ULTRA hose and then convert to 4 inch hose, see the listing for a 3in to 4in adapter.

Build your custom smoke and fume extraction system with hose adapters allowing you to transition between various size hoses.

This part allows you to connect a 4 inch (~101mm) hose directly to the back of the XTOOL F1 ULTRA, F2 ULTRA and inlet/outlet of the xTool IF2, and AP2 for the purpose of smoke and fume extraction of your laser cutter and engraver.

Certain laser enclosures such as the ones from XTOOL and Creality typically include some length of 3 inch flexible hose. It is common practice to attach an inline duct fan to the machine / enclosure to draw out the fumes. These duct fans are most commonly found with 4 inch inlet/outlets. Therefore to connect the machine / enclosure and the inline fan you must convert to a 4 inch hose (to the inline fan). This part will make it possible.

If you are looking for examples of inline fans that are commonly used for this application, see the links below. I would highly recommend the xTool Inline Fan 2 (IF2) as it interfaces with the xTool F1 Ultra and is very powerful. Check the link below for the best price from xTool. If you wish to run 4 inch hose on both the inlet and outlet of the xTool Inline Fan 2, then you would require two of these adapters.

 What is included:

• QTY: 1 Plastic Adapter (color: GREY/BLACK)

As an Amazon Associate I earn from qualifying purchases (at no extra cost to you). Related items you might find useful: 

• XTOOL F1 ULTRA
• XTOOL Air Purifier 2
• XTOOL Inline Fan 2
• XTOOL 6 inch Inline Duct Fan (with 4inch adapter)
• 190 CFM 4 inch Fan With Speed Controller
• 195 CFM 4 inch Fan With Speed Controller
• CREALITY Laser Enclosure
• XTOOL Laser Enclosure
• 4" Flexible Hose