You are correct the 50 amp GFI panel home depot will not work on a walkins hot tub control panel! That hot springs has for control panels! But if you have one laying around like I do you can take that 50 amp breaker out and go to a local electrical supply place and buy a double pole 30 amp GFI for 120.00 and a double pole 20 amp GFI for around 120.00 and it will fit in that panel. I don't believe you can buy those empty panels separate. The reason I have empty ones is because it is cheaper to buy the whole panel with the 50 amp GFI in it then to buy the 50 amp separate! I have been repairing hot tubs and moving hot tubs for over 30 years!
