12-PACK Felt bulletin board adopts premium felt material made of polyester fiber, which is environmentally friendly. The package contains 11.8 "x 11.8", 0.35" thick high-density felt panels. Our bulletin boards as Extra Large Cork Boards Huge Bulletin Boards Alternative Each panel measures 30x30cm/11.8"x 11.8", easy to customize to any size you need. No nails are required for installation, please refer to the installation diagram. It is very light, easy to install, sturdy and dense. Large areas of felt board help reduce echoes in a room, making it the perfect material for a home office, school, nursery, or any other commercial setting. From your kitchen to your home office, our bulletin board is perfect for pinning your notes, messages, pictures, memos, calendars, menus, or reminders in any setting.