Which Is Thicker 20 Or 30 Gauge?
Which Is Thicker 20 Or 30 Gauge? Therefore, a 20 mil liner thickness is equal to 20 thousandths of an inch. … Some manufactures or retailers like to offer their liners in terms of gauges because they sound thicker than a true mil. To be technical, a 30 mil liner is equivalent to 0.0300 inches.