HDX HD#188-327 9 ft. 12/3 20 Amp 250-Volt Air Conditioner Extension Cord, Grey

Features:

Designed to power through-wall or window air conditioners over 15000 BTU only, it will not work for standard household items or appliances
UL Listed in US and Canada
20 Amp, 250-Volt and 5,000-Watt maximum capacity provides plenty of power
Right angle design plug allows plug to fix into wall and save more space