Avery Banner Sign Kits White 18 X 48 1SIGN Per Package Banner backing is made of a durable polyethylene material and includes metal grommets for easy hanging. Eight sheets are needed per banner. Weather-Resistant sleeve protects banner from rain, sun and wind. Each carton comes with two 18"x48" banner backings and twenty 8-1/2"x11" sheets -. SOLD BY THE CT