Hi Gregory,
See this:
The Catalyst 4500 series switch allows you to configure a maximum of 32 different maximum transmission unit (MTU) sizes system wide. This means that the maximum number of different MTU sizes that you can configure with the system mtu, mtu, ip mtu, and ipv6 mtu command on all Layer 2 and Layer 3 interfaces combined is 32.
The only commands supported are system mtu, mtu, ip mtu, and ipv6 mtu command so I guess that the one that will be similar is ip mtu.
Here is the link for the IOS you have:
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/15.1/XE_330SG/configuration/guide/sw_int.html#wp1068699
Hope it helps..