We not only strive to give you the best price, but we also use the best materials. Our carrels are manufactured in the U.S.A under the strictest standards. We use 32 ECT "B Flute" 2-Side Kla-White 3-ply corrugated cardboard for all of our products. Our carrels are 1/8" thick (B Flute). Some of theirs are 1/16" thick (E Flute). You could compare the strength to most pizza boxes. Our carrels are white on both sides to brighten the work area and give a professional appearance. Rounded edges make our carrels safer. Our carrels won't wobble or swing. Our carrels are guaranteed to set level. "U.S.A. Made" means jobs and quality! To download / print / or view “Choosing The Right Carrel” “Click Here” .To download / print / or view “Making Your Own Carrels?” “Click Here” .