Simplicity OEM Replacement Blade 345-106
FITS MODELS: LTH, 1600 series 
Requires 3 for 44'' dek; requires 1 of 345-106 and 1 of 345-102 for 38'' deck; hi-lift blade 
Length 16 1/8'' (409.6mm)
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)