Hi @juanosorno
Do you mean the connector shown in Step.5 of the [guide|150422] guide?
If so is [https://www.easybreathe.com/ResMed/ResMed-Air-10-Supplies/Humidifier-Chamber-Air-Outlet-for-ResMed-AirSense-10-and-AirCurve-10-Series-CPAP-and-BiLevel-Machines-p4472.html|this] it?
If it is search online for [https://www.google.com/search?client=firefox-b-d&q=SKU+37310+|SKU 37310] (supplier examples only) to find suppliers that suit you best.