A Sizes
A size card holder is best to frequently store and protect the reference materials that are being used. They are made from clear Nyrex material that is of premium quality. These card holders are generally sealed on the three sides and at the long edge there is an opening with a thumb role. They are usually packed in the quantity of 25. They are made of polypropylene material that are polished and are of high quality. They have covers that can be cleaned and wiped easily and are grease-proof, tough protecting the material from dirt, duct and moisture.