gsm means grams per square metre. The lower the gsm, the thinner the paper/card stock and the higher the gsm, the thicker the paper/card stock. A typical standard paper you would use in your home or office printer would be 80-90gsm. A letter head or with compliments slip are generally 100gsm. Standard brochures, flyers or handouts are typically 150-200gsm. Premium flyers, brochures, invitations and postcards are between 200-300gsm. Business cards start at 300gsm to 350gsm and for premium cards go from 400 to 600gsm for specialty cards. Posters range from 150gsm to 220gsm in general depending on the size and purpose. If you are unsure what gsm is best for you and your project, we are happy to help or recommend the most suitable for you.