Please send me the dwg file of Air Curtain for plan.Thank you

Sure, no problem.  And to whom do I address the invoice?  Full name and address would be helpful for starters then we can talk price.  OR...............................................You can visit one of many websites of manufacturers of air curtains and see if they have CAD drawing files available for downloading.  Start with an Internet search on "air curtains".John Connor2018-06-22 14:41:43