9.9 cm x 10.1 cm (3.92 in x 4 in). 264 2-ply sheets per roll. Total 23.7 sq m (258 sq ft). 9 mega = 36 regular (based on number of sheets in Charmin Regular Roll). Irresistible softness. 1 mega = 4 regular rolls (based on number of sheets in Charmin Regular Roll). Try our roll extender. 9 mega rolls. Unscented. Charmin is safe for your sewer or septic system. www.charmin.com. www.pg.com. how2recycle.info. Facebook. Twitter. Join the conversation with Charmin and don't forget to enjoy the go! Call 1-800-777-1410 or visit charmin.com for your free roll extender. Questions? 1-800-777-1410; www.charmin.com.