Comparison : Item # 6061 'T6' Hard 0.0160" x 12" x 12",
Item # 6061 'T6' Hard 0.0160" x 12" x 18",
Item # 6061 'T6' Hard 0.0160" x 12" x 24",
Item # 6061 'T6' Hard 0.0160" x 24" x 24",
Item # 6061 'T6' Hard 0.0160" x 24" x 36",