Available in 2.67 x 7/8 in. and 4.2 x 1 1/16 in. sizes, UNITREX Polycarbonate Panels are impact-resistant, UV-resistant, and provide long-term protection against denting, cracking, and peeling. Optically clear panels feature operating temperature range of -40 to 212°F and have non-combustible flame spread rating of 6. Designed to match profiles of metal sheets in steel building industry, 2.67 in. models come in Clear and Green Translucent, while 4.2 in. models additionally come in Opaque White.