Awoco: 36' Elegant 2 Speeds 900 CFM Unheated Commercial Indoor Air Curtain

[Isolate Interior from Exterior Air] - This air curtain is not an air conditioner, it won't generate cold and hot air. Air curtain is a powerful fan that forcing a high speed air stream over the entrance to isolate the interior and exterior air environment while blocking 90% of Hot or Cold air, dust, and smoke. [US Patented Magnetic Switch Controlled Circuit (Patent No. US10584889B2)] - With the door switch installed, automatically turn on the air curtain when the door is open; turn off when door is closed. The door switch is optional; if you do not install the door switch, press the Lo/Off/Hi speed switch to turn on for 8 hours continuously running. [Easy Installation] - Refer to Technical Specification User Manual. 2)hang the air curtain up. 3) install the optional magnetic switch and connect to the dedicated 2 wires. [Professional Tech Support] - Parts, repair or exchange within 1 year. Awoco product reputation and customer service is a guarantee. Overall size: 35-1/2' L x 8-1/2' D x 9-1/4' H. Weight: 28.7 LBS. 57' power cord with plug is included. UL listed.