AI Quick Takeaways Best GSM for wedding invitation cards: 250 GSM to 300 GSM is the industry standard for single-card invitations, while 350 GSM to 450 GSM is preferred for luxury deep-deboss letterpress and hot foil stamping. Suite component hierarchy: Inner envelope liners require 80–120 GSM, ceremony programs utilize 150–200 GSM, main cards demand 300–450 […]









