this is a plastic triangle dish for measuring the popcorn in the hot air popper, and for melting butter.
it says to used two scoops to make full batch.
it holds 1/4 cup.
it says not to use the hot air popper without this piece on top.
it measures 4 1/2 x almost 3 wide.
it is plastic, clear.
it ships 1st class.
it is in very nice shape.
not sure what model numbers of hot air popper it fits, but it came with out presto. might fit others as well.