An arrangement for covering the contents of a container with a flexible sheet without contacting the surface thereof, which includes a support bracket formed from an elongated resilient wire or plastic strip, having U-shaped end portions for engaging opposite top edges of the container and an elongated generally horizontally extending resilient portion bowed upward between the U-shaped end portions for supporting thereabove the flexible sheet. If the container has appropriately spaced parallel upper flanges, a support bracket may be mounted thereon by sliding the U-shaped end portions along the flanges. For somewhat larger containers, the elongated portion of the support bracket is sufficiently resilient and flexible to permit the U-shaped end portions to engage the opposite edges of the container under the inward tension of the bowed upward portion.