Star Filter Range Hood Filter Starter Set - Includes 3 Mounting Frames + 3 Replacement Filters. Covers, Range Hood Filters, Baffle Plates. Non-flammable, high-removal-rate glass fiber type, thick [Frame Size: Width 297 x Height 340 x Thickness 7mm] After opening, it was discovered that the size was incorrect, so it has been packaged without ever being used. The set includes 3 frames and 3 filters.