SFI is the premier manufacturer for portable RF/EMI Shielded Enclosures, Large Modular Chambers, Tents, & Curtains. All Enclosures are portable, fully custom, and Made in the USA. Top Engineers and Officials trust SFI for EMC Chambers and Secure Communications SCIFS to provide them with an Enclosure with the highest shielding effectiveness. Visit our website today to learn about our product and contact one of our Engineers.