Perspex cast acrylic fluorescent colour sheets perspex 1000x500x3mm2t51 these fluorescent cast acrylic helios yellow sheets from perspexreg will certainly catch the eye and are ideal for use particularly on interior signs sales displays and other in store media these sheets are easy to fabricate and to cut to shape to suit your design perspex cast acrylic sheet 1000 x 500 x 3mm fluorescent helios yellow