#3 These are the OEM blades available for your mower. The #14 I am assuming it the one that came with your mower.
14 Snapper 7019795BZYP (replaces 7019795)
BLADE, Cutter
14A Snapper 7019795BZYP (replaces 7019795)
BLADE, Cutter
14B Snapper 7026691BZYP (replaces 7026691)
BLADE, Cutter
14C Snapper 7026407AYP (replaces 7026407)
BLADE, Cutter (Ninja - Quad Edge)
7017168 Recycling 21" Recyclin...
View attachment 28880
#4
Hundreds if not thousands of web sites sell snapper parts.