UPGRADED 97011790/S97011919 Grille-505 503 507 509 Wall Fans Cover Replacement Part(Strengthened Knob Threads & Screws, 2X Longer Lifespan Than OEM Parts(Nonperforated version),1Pc

UPGRADECompared with the 97011790 grille wall fan Cover kits from other manufacturers, we have upgraded the materials of components such as the built-in threads of screws and knobs. We have replaced the easily damaged plastic threads and iron screws with those made of pure copper and stainless steel. In addition, with the adoption of modern hardening and heat treatment processes, the service life of our product is far longer than that of the original product, and it also has a better texture | PackageThe bathroom vent fan grille Cover assembly includes 1x 11-1/2" wall grille cover, 3 threaded rods (1/4" - 20 UNF) in three lengths: 7/8", 1-7/8", 2-3/5"; 1x speed switch, 1x grille knob and 1x mounting stud bracket. The ventilation fan model 503 fits the 7/8" rod, model 505 & 507 fit the 1-7/8" rod, model 509fit the 2-3/5" rod. Note: Disconnect the power supply before installation | The grille Cover size is11 1/2 inch x 11 1/2 inchOEM size and colorPlease confirm your model and size before purchasing. The grille looks similar, but the size or model is different | 97011790 Grille Cover(Replaces Old Style) Compatible Models:509S Ventilation Fan509S-A Through Wall Fan - 180 Cfm / 6.5 Sones509S-B Through Wall Fan - 180 Cfm / 6.5 Sones509SMG 503505507509S (replacement old style) | We have treated the surface of the exhaust fan cover to make it more textured and easy to clean!