A standard extension follows the line of the trailer (curbside or roadside).
A wrap "turns the corner" around the front or rear of the trailer. It terminates on the opposite side.
The photo shows a "rear extension wrap" turning the corner on the lift gate end of a semi.
A cantilevered style frame or canopy uses horizontal braces and creates unobstructed clearance under the canopy. This style typically does not have skirts. Also called a Suspended Canopy.
Custom cut-outs can be added to the canopy’s skirts or roof-ends to accommodate any A/C or heating unit.
These cut-outs can be built with roll-up covers for when the units are not installed.