Hello all. We've been in the business for 39 years and have yet to come across this flex face clip system. I need to order some to complete a job but I cannot identify the clip system. Can anyone help me ID this tension system for flex faces? As an added bonus, a distributor? Thanks all in advance for any help you can supply! BTW, these are black plastic clips with no numbers, words, or any identifying marks. If it helps any, they are for a Home Depot sign.