Form N2A-3 is a black and white Unsealed Test Chart. The top is black and bottom is white with overall dimensions of 5-1/2 x 10 in (140 x 254 mm). This chart is an alternative to Form N2A-2 for those customers who desire a lower level of gloss in the black area. The gloss of the black area is typically 35 units when measured with a 60° gloss meter.