All measurements are approximate. Prices subject to change.
(od) - outside door
(c/od) - cut-out/fire hydrant
(c/sd) - cut-out smaller door
(ins) or blank - inside unit
An outdoor (od) unit has an outside door.
A cut-outdoor (c/od) unit has an outside smaller door.
A cut-smaller door (c/sd) unit is near a fire hydrant and less square footage.
All outdoor units are ground level, which gives you the ability to load your belongs directly from a vehicle.
An inside unit is indoors and will require you to go thorugh an access door, also at ground level.