Colorplan envelopes offered here in a range of sizes and all 50 colours from the famous colorplan range. With most sizes available in pack sizes of 50s or 500s and the option of a gummed or peel and seal closure across the range, whatever your need, you are bound to find exactly what you are looking for right here. Manufactured using the 135gsm colorplan paper, these envelopes are produced to an exceptionally high standard.