The MAC header contains 1 octet of frame control, 6 (2) octets of source address, and 6 (2) octets of destination address. The MAC trailer contains 4 octets of Frame Check Sequence (FCS), for a total of 17 (9) octets.
IEEE 802.4 networks have no minimum packet size.
IEEE 802.4 networks have a maximum packet size of 8191 octets including all octets between the frame control and the FCS inclusive.
This allows 8191 - 17 (MAC header+trailer) - 8 (LLC+SNAP header) = 8166 for the IP datagram (including the IP header).