ramp door extension

Today a Hurricane motor home toy hauler came into the park and when he got ready to unload his bike he had 2 ramp door extensions that allowed him to NOT have to let the door down to the ground ! I have never seen anything like this and was wondering if anyone else had and am wondering where a person might be able to find these things ????????????
Thanks
chaseb

Did you get any pic's?

Unfortunately i don't know how to put pics on here ! OLD !!!! They we're black plastic and about 3 feet long and maybe 24 inch's wide and the ramp door actually sat on them with a flush surface with the door !
chaseb

If you do a search for "Race Car Ramps" you should find what you are looking for. Here is one example. http://www.raceramps.com/trailer-ramps-loading-and-hauling-extensions.aspx Some of them can be kind of spendy.

Thats them, Thanks
chaseb