Simplicity OEM Replacement Blade 345-102
FITS MODELS: LTH and 1600 series 
Requires 1 of 345-102 and 1 of 345-106 for 38'' deck; hi-lift blade 
Length 22 1/4'' (565.2mm)
Centre Hole 3/4'' (19mm)
Outer Hole 3/8'' (9.5mm)
Centre 2 9/16'' (65.1mm)
Width 2'' (50.8mm)
Thickness .203'' (5.2mm)