Oce Matte Imposition Proofing Paper (90 gsm/24 lb) is ideal for economical imposition and content proofs. With a smooth matte finish and front and back coating, BC2S24 can easily be used for 2-sided proofs. BC2S24 is also universally compatible with most printer and ink combinations. 2-side printable, water resistant, fast dry universal compatibility, matte finish. Physical properties: Matte, 100% bright, acid free, 4 mil, 96% opaque, 106 white.