iStarUSA TC-RAIL-20 20" Sliding Rail Kit for Most Rackmount Chassis - Newegg.com
RSV-R28LX Ball Bearing Sliding Rail for Rackmount Chassis - Rosewill
Amazon.com: Rosewill 4U Server Chassis 11 Bay Server Case 8X 3.5 + 3X 5.25 HDD, ATX, Rackmount Server Case, Include Front 2X 120mm Fans Rear 2X 80mm Fans Metal Rack Mount Computer