This offering is for a NEW LG Microwave Charcoal Air Filter that shipped with the following LG microwave models: LMH2235ST, LMHM2237ST, LMV1645SB This is a true LG filter! This offering is for ONE Filter! Installation instructions are not included with your purchase - However, the user manual that came with your microwave contains installation instructions. Don't see your model number? Send us a message!