Purchased new from the only manufacturer-approved vendor (Ambient Stores) in May 2025, only needed a single hose from the accessory pack (ARC-ACC-DUSETG1-V1), which is now completely out of stock on their website.

Compatible with ARC-12SD, ARC-12SDH, ARC-14S, ARC-14SH, ARC-143MX, ARC-141BG

Contains all pieces shown.  Contents as follows:

* Includes one (1) 5.0" diameter exhaust or intake hose (Extendable up to 60") (ARC-EH-TYPE-S)
* Includes one (1) window slide bars set with Dual Hose Opening (ARC-WK-1214DUAL)
* Includes four (4) hose connectors (ARC-EHCON-NW1)
* Includes two (2) fixtures
* Includes two (2) covers

Note this is for the older, version 1 units.