COMMERCIAL POWER VENT KIT USED IN CONJUNCTION WITH STACK DAMPER, INCLUDES: VH1-4 VENT TERMINATION, HSUL-1B POWER VENTER, INSTRUCTION MANUAL, WIRING LABEL, 40 FOOT 18/4 WIRE, AND HARDWARE. INLET AND OUTLET BOTH 4 IN., MOTOR SPECS 1/25 HP, 115 VOLT, 60 HERTZ, COUNTRY OF ORIGIN: CANADA, ADDL MDL# AP11646