Question: What the heck are they called ?

Maybe a dumb question but I have tried to find these and don't know what they are called:

I need the 2 little plastic (maybe aluminum?) blocks/spacers (or whatever they are called) that go at the bottom of the rear (large) window on a 68 69 fastback. They are black about 2" long x 3/8 wide x 3/8 tall and go in the channel of the window frame at the bottom to space window up while installing the sticky stuff and setting window. 

They got all rolled up in the weather stripping gunk when removing window and I threw them out like a dummy .... Any help would be appreciated... Website etc or at least the name? I tried window spacers, blocks, mounts with no luck 

Thanks guys

As long as the back glass is centered within the pinch welds and prevented from sliding down, you can use almost anything to support it.. I've used older tooth brush handles ( when they were square), cut up pieces of plastic shims glued together.. Just get the dimensions you need with the glass centered in the pinch welds and make what you need.. The set blocks just keep the glass from sliding downward and are hidden by the surround moldings.