Indoor & Outdoor Fireplaces, Plus Accessories

I need help finding a fake fireplace/mantle for home.?

I have seen the free- standing mantles that are used for decorating but can’t seem to find them. I am not for sure what they are called, so I am assuming they are called mantles. I want to find it because we live in Army Housing and do not have fire places and I have alot of Christmas decor for a fireplace mantle.
Does anyone know what these are actually called or where I can find them???? HELP!!!!!!!!

Heaps of ventless fireplaces can be found on this site. They’re not for warmth at all – just ambiance:
http://www.homedecorators.com/Furniture/S/fireplace/Living_Room/Ventless_Fireplaces/