Fixing up the dining room and want to use 5 1/2 inch baseboard. Having trouble deciding what to do with air diffuser for heat. Current is 4 1/2 inches high. Have found one diffuser which is 6 inches high but it is very unattractive. Is it best just to cut hole size of diffuser in higher baseboard and recess or just go with smaller baseboard. I guess question is, are there any suggestions to trim around shorter diffuser when using higher baseboard?