All side panels glued with 8 mm felt
https://www.buildandlisten.com/loudspeakers/cno-grand/buildprocess/b744deba-817b-4247-8836-b2fa77bdcdf2.jpeg/view
https://www.buildandlisten.com/loudspeakers/cno-grand/buildprocess/b744deba-817b-4247-8836-b2fa77bdcdf2.jpeg/@@download/image/B744DEBA-817B-4247-8836-B2FA77BDCDF2.jpeg
All side panels glued with 8 mm felt