Jay M Boynton Beach , FL January 30, 2015 Appliance: General Electric Microwave PNM1871SM3SS Ge Microwave Pnm1871sm3ss: Ge profile microwave oven vent grille was broken plastic tabs broke off so grille fell off microwave. How to replace Grille Asm, Ss. Ordered a new Vent Grille from ApplicanPartPros.com and installed it myself. Install went very easily by securing 2 small screws. My only complaint was that there were no instructions in the box. The good news, Customer service told me where to find the screws to remove the old grille and to secure the new one. 8 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes