Midwest Ducts 10 x 8 to 10 x 10 Beam Jumper Elbow. Normally requires two elbows to jump a beam. Comes with 4 slips and 2 drives. Items are new and unused in original box. Please call (952) 884-8266 with questions call (612) 518-6683 After 5:00 and on weekends. I ship nationwide. Minnesota residents will be charged sales tax.