CONTENT: Wood Frame - Walnut Brown Finish. Fits 18x24 poster exactly but displays 17.5x23.5 without mat. Two mats included to display 15.5x19.5 (16x20 Poster) or 11.5x17.5 (12x18 Poster). SOLID WOOD Border and TEMPERED GLASS Front. A display poster is included. Simply use the frame as received or insert your own poster. FEATURES: Substantial, not lightweight. Each frame comes with 2 acid-free mats for a unique display or to protect your artwork front and back. Border width: 1.5 inch. Thickness: 1 inch. Black backboards and back hooks for hanging frame (Landscape and Portrait). EXACT FIT: 18x24 frame fits 18x24 poster exactly. Outer dimensions are 20.5 x 26.5 inch. You can also tape a 16x20 or 12x18 poster to the Mats. The frame will fit up to 0.10 inch thick posters with the backing installed. It will fit up to 0.80 inch thick posters with the backing removed and poster taped or attached to the frame. FULLY ASSEMBLED: The frames will arrive fully assembled. Please hang these frames using the already installed back hooks. Do not hang by the frame border itself. QUALITY: Smooth Matte surface finish and front face that will complement your displays. Suitable for Pictures, Posters, Documents, Certificates, Puzzles, and more.