Black Double-Sided Sign Holder | For Effective Display A4 size: 4 pieces 15 * 11 size: 8 pieces Product Type: Black Double-Sided A4 Sign Holder Size: A4 Display Type: Double-Sided for visibility from both sides. Material: High-quality pure transparent acrylic, resistant to yellowing and impact for long-lasting durability. Base: A sturdy rectangular black base, with white aesthetic details to enhance office luxury and dignity. Design: Streamlined structure that reduces light reflection and provides a comfortable viewing angle.