MTD Replacement Part Troy-Bilt Grassbag Assembly This is an O.E.M. authorized part Fits various MTD models OEM Part Number 964-04101 This is a MTD replacement part Assembled Height: - 18.04. Assembled Width  26.56 Assembled Depth  12.24 Fits the Following Troy-Bilt Walk Behind Models: 12AI832Q711, 12AI832Q766, 12AI839F011, 12AI839G211, 12AI869F011, 12AI869F066, 12AI869G211