The GeneralAire RMB-15 is a remote blower kit that converts your ducted DS15P model into a non-ducted room humidifier. 

Specs

• 115V - For 115V Installations
• Remote mount blower kit for DS15P and 5500 steam humidifiers
• 6" Through-the-wall blower housing with blower: 13 3/4" W x 9 3/4" H x 6" D
• Front grille package
• 12' Hose