Dropin replacement of exhaust fan求建议？

Hole about 8 1/2" in diameter. Too noisy now. ChatGPT said this was popular one in 1990s. motor about 3.3". back draft 

 

2nd one grille about 15"x9" in size. Cylinder has two fans (. ChatGPT said logo is Ventline. May be completed dead. Will check electric wire just to make sure. 

所有跟帖： 

• do u have access to attic -borisg- ♂ (0 bytes) () 08/31/2025 postreply 15:21:42

• Yes, I may stayed there for 5 minutes. Electrician worked -RomaVacation- ♂ (87 bytes) () 08/31/2025 postreply 20:22:45

• replacement may require new hole -borisg- ♂ (118 bytes) () 09/01/2025 postreply 03:24:46