Is this a pocket type covering or a magnetic sheet that covers photos?
Pocket type. Pretty heavy duty and can fit to sheets of most photo paper back to back
is it 8 or 8.5 in. wide?
They are 9.25 wide at edge with the holes that go in a binder. They are 8.5 wide in the insert portion. I use them for 8.5 x 11.0 inch photo papers that I put my photos on.They fit perfectly. I like the old-fasioned look of black paper with photo corners.