Sliding exhaust vent cover. Used for about a year. I don't think there's much oil汚れ, but I put it in the dishwasher once, and there are faint water spot-like marks all over the front and back. It's a little difficult to see in the photos, but please check carefully. Size: Approximately Width 45-82cm x Depth 8cm x Height 7.5cm Weight: Approximately 850g Material: Steel (powder coating) Color: Black Heat resistance: Approximately 200 degrees Celsius Compatible size: Built-in gas stoves and IH cooking heaters with a width of approximately 43cm to 80cm Exhaust vent height: Approximately 1.5cm or less This is a used item, so please understand.