This is a similar model to the 410 but with an additional tweeter. Unfortunately this is a very HEAVY cab that didn't come with any casters. I've been toying with the idea of installing some removable casters. This would probably involve some modifications to the cabinet to mount the casters. I'm unsure about whether this is a good option. I could just get a hand truck to simplifiy moving this sucka. Whadda ya'll think?