5" x 5" 23 Watt 220 Volt Aluminum Heated Round Vent Port For 4" Thick Walk-In Freezers - Walk-In Refrigeration Hardware - Component Hardware - Industrial Components & Assemblies
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AC Infinity Window Duct Kit, Universal Vent Port for 4” and 6” Inline Fans, Window Vent Kit Fit with HVAC Ducting, Hoses, Duct Fans, Air Conditioner, and Dryer in Homes, Grow Tents,