Large mailing envelope sizes

Here are some common large mailing envelope sizes:

  1. Large Flat Rate Envelope: 12 1/2 x 15 1/2 inches (31.8 x 39.4 cm)
    • Weight limit: 70 oz (2 kg)
    • Cost: $13.35 (as of 2022)
  2. Regional Rate Box A: 13 x 18 x 3 inches (33 x 45.7 x 7.6 cm)
    • Weight limit: 20 lbs (9 kg)
    • Cost: $18.95 (as of 2022)
  3. Regional Rate Box B: 12 x 12 x 5 inches (30.5 x 30.5 x 12.7 cm)
    • Weight limit: 15 lbs (6.8 kg)
    • Cost: $14.95 (as of 2022)
  4. Large Envelope (Greeting Card Size): 5 1/2 x 8 1/2 inches (14 x 21.6 cm)
    • Weight limit: 3 oz (85 g)
    • Cost: varies depending on destination and postage rate
  5. Large Envelope (Catalog Size): 9 x 12 inches (22.9 x 30.5 cm)
    • Weight limit: 13 oz (368 g)
    • Cost: varies depending on destination and postage rate
  6. Large Envelope (Large Flat Envelope): 10 x 13 inches (25.4 x 33 cm)
    • Weight limit: 16 oz (453 g)
    • Cost: varies depending on destination and postage rate

Please note that these sizes and weight limits are subject to change, and you should always check with your local post office or the USPS website for the most up-to-date information. Additionally, the cost of postage will depend on the destination, weight, and size of the envelope.