Perspex cast acrylic fluorescent colour sheets perspex 1000x500x3mm021 these fluorescent cast acrylic celestial blue 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 celestial blue