Feedback at extremely high gain levels can occur with any hollowbody guitar. Regulating the passage of air through the sound chamber can help to minimize or even eliminate most feedback issues. Taylor’s RC Foam Inserts are laser cut to fit precisely within the stylized F-holes on the T5 Custom and Standard (with binding in the F-holes) and the T5 Classic (T5-X) and T5 LTD (without binding in the F-holes). (Qty-4)  Model# 8030