Channel letter aluminum coil strip suppliers supply strips for mini and edge-free letters. The coil is painted with PVC protective masked. Standard stock sizes include .040 x 5.3” x 270’, .040 x 4.3” x 270’ and .032 x 5.3” x 270’. The mill finish channel letter coil sizes are .040 x 3.5″ x 270′ , .063 x 1.5” x 500’, …