Need to add some airflow to a cabinet, wardrobe, shoe cabinet, or entertainment center? These aluminum vent covers are the perfect solution. You get 4 in the pack. Each one is a rectangle measuring 225mm by 50mm (that's about 8.86 x 1.97 inches). They're made from sturdy, anodized aluminum alloy that won't rust, corrode, or bend easily. The design has neat horizontal slots (louvers) that let air circulate while keeping most dust and larger particles out. They're slim, only 9mm (0.35 inches) thick. Installation is straightforward: you cut or drill a hole in your cabinet panel (the hole should be 193x34mm / 7.6x1.34 inches), then slide the grille in from one side. There are mounting holes on the edges if you want to secure it with small screws (screws not included). They give your furniture a clean, finished, and professional look while preventing stuffiness, moisture, or heat buildup inside. Essential for under-sink cabinets, AV cabinets, or any closed storage space that needs to breathe.