Just bought the mower - so no need (yet) for the replacement blade, which was supplied in a manufacturers box 19"x2"x2"; but, was SHIPPED in a box (B05) which is 22"x5.5"x15" -- and FILLED with paper 'packaging'! At first, I really didn't think there was anything IN it, BUT paper! Then, I received a 100' extension cord, by itself, in your another smaller (Z3)box - which could have accommodated BOTH items! Shame on Amazon! That's just NOT the way to do it anymore!!!!!