3D Printer Hose and Fan Ventilation Adapters

These products are a collection of fan and hose adapters to go from popular fan sizes to popular hose sizes.  The products are just the adapters as they are intended to help the DIYer vent their own systems.  Even though the pictures show fans as well, you have to buy those yourself! The pieces that take you from a fan to a hose are called "fan to hose adapters".   The pieces that take you from a hose to an outside vent are called "hose to vent adapters". Each adapter is designed to fit M4 screws; the length depends on the thickness of the material you're connecting, but typically 12-14mm screws work fine.   To complete venting to the outside you can find flexible 4" dryer duct hoses or flexible 3" hoses online or at most hardware stores. This can be connected to the outside using the same techniques you'd use for a clothes dryer, or you can purchase one of the many compatible window-venting kits.  Note: 3D printer enclosure fans typically don't generate enough pressure to push open v