MTD Rear Rider (Twin) replacement grass bag. Bag ONLY Replacement bag for MTD grass catcher models 190-063,190-064, 190-073 & 190-103 Replaces MTD Part No. 764-0221, 9640221 Fits MTD Twin catchers used on 500 series rear engine & 300, 400, 600 front engine lawn tractors Approx Dimensions 16"x16"-opening 20"-depth 12"x12"-Pan Frame is NOT inlcuded. Fabric bag only