C4 White Board backed envelopes with window come in boxes of 125 envelopes and are ideal for protecting A4 sized letters, documents, certificates, photos and mailings where you would like to line the address up with the window in the envelope instead of printing address labels. 120gsm plain white paper gives a highly presentable finish while the 1000 micron rigid backing board prevents bending, folding and damage in transit. Peel and seal closure speeds up packing and 125 unit boxes of flat pack envelopes ensure they arrive with you in excellent condition and allow you to store high quantities in minimum space. Order today and save with our accumulator saver box rates, free samples can also be ordered should you wish to try before you buy - if you need any help then please Contact Us