TP,
Don't know if ours is a Milenco, but it's a very similar build to the one in Ian's link, except ours has rubberised treads rather than checker plate, which I imagine could become slippery when wet (for the Bon Jovi fans).
We bought it to use with our first van and kept it after trading up.
It's lightweight, very strong, very stable, non slip, easy to keep clean and still looks new 5 years on.
The only minor niggle is that it is slightly wider than our door opening, but we soon learnt to tip it on to it's side to get past the frame, then stand it back the right way up, before pulling it back towards the door for travelling.
I bought it local but can't remember which dealer I used,
Ken.
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