1'x4' HEAVY DUTY Clear Acrylic Prismatic Light Lenses @.187 gauge (3/16"). The plastic light diffuser panels sold at most hardware and home improvement stores are thin, brittle, and not made to last. But, not the ones sold at 1800Ceiling.com. Our light diffuser panels are made of high-impact, HEAVY-DUTY high-quality 0.187 gauge clear acrylic. These panels are so strong and durable that they can even sit in a standard grid-style ceiling with no additional support. When you purchase clear light panels from us, you can rest assured that they’ll stay clear because they won’t fade or turn milky over time like lower-grade panels. If need custom light diffuser panels, be sure to measure your existing lens carefully before ordering as custom orders are non-returnable. Please use the drop-down menus to specify the width, and length of your light lens to the closest 1/8". Shop at 1800Ceiling.com and save on all of your custom light diffuser panels. 1'x4' HEAVY DUTY Clear Acrylic Prismatic Light Lenses @.187 gauge (3/16").