White Presentation Corrugated Firm Board, 22"x28", 6/Case. Royal Brites® White Firm board double-wall corrugated white board to be used for any project or presentation that requires a strong, sturdy base. Use the Royal Brites®White Firmboard double-wall corrugated white board on both sides to make a presentation for school or business or to make a street sign or indoor announcement, sign or advertisement. Great when used with Royal Brites® poster board in Primary Colors or fluorescent colors. Use them together as a display board. Apply photographs to create photo display boards, create a poster, attach letters, shapes and pictures to it. Great for announcement boards and various posterboard projects, outdoor signs, sidewalk signs, indoor signs and signage. Other firm board ideas: mount Royal poster board on a firm board and use the Royal Brites® Project Works® adhesive borders to link the two at the top. You can then flip the posterboard on either side of the firmboard and use both sides: twice the color, twice the space. We recommend the poster board variety packs in Primary Colors and fluorescent colors to get the best combinations and value for your money.Other recommendations: use as a presentation board to create a professional display board or a poster presentation board. Make a poster board collage, use it for an eye-catching science project, for any school or kindergarten project or school presentation, student of the month or students' corner displays, business presentations, etc.Mount pictures or posters on it, frame and hang on a wall. For poster board ideas, see our recommendations in the Ideas section. Decorating a poster board or a firm board has never been easier with our Royal Brites® Project Works® poster board accessories line, consisting of markers in 2Cool fluorescent colors, adhesive and removable poster board borders, lacing borders, letters and numbers in paper vinyl black, white and fluorescent colors, stencils and shapes etc.Look for Royal Brites® Project Works® poster board accessories.