Corrugated 250 (Flute B) — Mottled Top/ Brown Test — 40 ECT — Single Wall

Outside: mottled off-white top with brown kraft undertones. Brown inside. B-flute is a good alternative to E-Flute for heavier items. Twice as thick, it also serves as an insulator, protecting products from sudden temperature changes. Withstands 40lb pressure to the edges. (1/8"(3mm); 48 flutes/f)