Red and green LARGE bars on transparent support. CHILDREN’S SIZE.
R/G bars are indicated for reading activity with anti-suppression check.
Recommended to use with VTE red-green goggle (E/RGG1-2-3).
Coloured bars 21 mm width; transparent space 16 mm width.
Support (sheet) made of Polycarbonate material.
Sheet size: 22 x 28 cm.
Sold in pkg. of 6