Abstract: An air filter assembly is provided which comprises a compressible air pervious multi-sided filter panel and a frame therefor, the latter being adjustable from a collapsed first mode to an operative second mode. The frame of foldable sheet material includes a foraminous center section in supporting engagement with the filter panel; a marginal section delimiting the center section; and a plurality of elongated peripheral sections arranged in alternate pairs and foldably connected to an coacting with the marginal section and with each other to form a hollow verge encompassing the filter panel periphery when the frame is in the second mode. The peripheral sections form a substantially flat multiply flange overlapping and compressing the filter panel periphery when the frame is in the first mode. A first pair of alternate peripheral sections have the opposite end portions thereof overlying corresponding end portions of a second pair of alternate peripheral sections when the frame is in the first mode.

Abstract: A carrier for receptacles is provided which is formed from a blank of foldable sheet material. The carrier includes a collapsible sleevelike member having foldably connected top, bottom and side panels. Pairs of apertured panel sections are provided which coact with the opposing surfaces of the top and bottom panels to retain a plurality of receptacles within the carrier. Each pair of apertured panel sections are mounted for adjustment between operative and inoperative positions. The inner edges of a pair of panel sections are integral with and foldably connected to one another and, when the panel sections are in an operative position, the inner edges of the sections are spaced a substantial distance from the adjacent opposing surface. The outer edges of the pair of panel sections are foldably connected to opposite peripheral portions of the adjacent opposing surface.