This is a A-AH77804 Sieve, Bottom, Round Hole PN: AH77804Main Description As Following : A-AH77804 Sieve, Bottom; Round Hole P.N: AH77804 Length: 46.05"Spacing: 1/8" (3 MM)Width: 41.87" Replaces: RHJDB66003 *** NO CLASS *** , Crossed From: AV103793 VAPORMATIC Found in Section & Models : Separator Area > Chaffers/ Sieve/ Frames/ Shoes, John Deere COMBINE: 6600, John Deere COMBINE: 6601, John Deere COMBINE: 6602, John Deere COMBINE: 6620 (SN <610300), John Deere COMBINE: 6621, John Deere COMBINE: 6622 (SN <610400) Associated Items : New Also A-JD-O-OMH111330, A-JD-O-OMH120048 And : Length: 46.05" Spacing: 1/8" (3 MM) Width: 41.87"