Abstract: A retractable seat cover for providing temporary protection to a seat, such as an automotive seat or piece of furniture, includes a housing, a roll of fabric, a retraction mechanism, and a strap. The housing has a slit for enabling the fabric to be extended from the housing through the slit or be retracted into the housing through the slit. The fabric, which may be waterproof, moisture repellent and/or have anti-bacterial properties for providing additional protection to the seat, is used to cover the upholstery of the seat. The retraction mechanism includes a spring roller mechanism and a button for controlling rotation of the roll of fabric. The strap is attached to a top portion of the fabric and is used to secure the seat cover to the seat, such as a headrest of an automobile or the top of a piece of furniture.

Abstract: A ventilated cage and rack system which maximizes cage density within the rack is provided. The rack includes at least one air exhaust plenum, and at least one canopy disposed within the rack. The canopy is capable of supporting a first cage within the rack above the canopy, and also positioning a second cage below the canopy so as to maintain a gap between the top of the second cage and the canopy to permit air to be drawn into the air exhaust plenum from the interior of the second cage through the top of the second cage and to also permit ambient air to be drawn across the top of the second cage into the air exhaust plenum.

Abstract: A ventilated cage and rack system which maximizes cage density within the rack is provided. The rack includes at least one air exhaust plenum, and at least one canopy disposed within said rack. The canopy is capable of supporting a first cage within the rack above the canopy, and also positioning a second cage below the canopy so as to maintain a gap between the top of the second cage and the canopy to permit air to be drawn into the air exhaust plenum from the interior of the second cage through the top of the second cage and to also permit ambient air to be drawn across the top of the second cage into the air exhaust plenum.