AVI-SPL leased 16,824 square feet at 337 S. Northlake Blvd. in Altamonte Springs, FL for 91 months. AVI-SPL is a video communications provider which builds and supports systems and environments that enable video collaboration. The 40,340-square-foot property is located in the Seminole County Industrial submarket and is part of an 81,000-square-foot office flex park, Northlake Business Center. It was built in 1982, and with the addition of AVI-SPL, the property is now 82 percent leased.