C4 manilla envelopes are generally used for non sales uses or where large quantities are used. We stock C4 brown envelopes in several thicknesses from the medium weight 80gsm up to the extra strong 135g heavy weight envelopes.
C4 manilla envelopes are also available in gusset that are used to expand in order to accept a catalogue or brochure. We also stock board backed envelopes printed with DO NOT BEND. These are used for sending items such as certificates or artwork and keep documents flat and in good condition.