Screen Gems Inc. offers stock IGA market or custom printed signs for your Signicade, sidewalk or other A-Frame Sign Holders Signage Inserts. Sidewalk, curb, & A-Frame sign holder signage inserts communicate to customers the products they want or need in your store. They are your silent salesmen. A-Frame sign holder signage inserts are ideal for grocery, wine and spirit , convenience, hardware, golf, or other retail stores. Screen Gems Inc. -your resource for supermarket merchandising supplies.