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These A3 5mm black foam boards with core measure 297 x 420mm (11.7 x 16.5) and offer a deep black matte surface combined with a reinforced black core for superior rigidity and visual impact. The rich black finish enhances contrast, making artwork, prints and signage appear bold and professional.The 5mm core provides enhanced strength while remaining lightweight and easy to cut, making these boards ideal for photography mounting, retail displays, model making and creative layouts. They maintain their structure without bending or warping.This pack of 10 A3 black boards is perfect for designers, photographers, students and businesses seeking a premium, highimpact board for mounting and display applications.