Selective MAC Address filtering

Trying to connect a UTec Wifi bridge to home XFI gateway. device will only pair with 2.4 GHZ channel, so i need to selectively whitelist the MAC Address of device to the 2.4GHZ channel and blacklist it on the 5 GHZ channel, but the only option i see if to filter by SSID. Is there a way to either split the SSID to have 1 for each channel, or to do MAC filtering by channel?