Moving supplies, frame corner Protectors, 4 inch L x 4 inch W x 1/2"-2"h, White (Pack of 500). use these to protect picture frames and mirrors from nicks and scratches while moving. Adjustable Protectors are pre-scored to fit frames three different ways from 1/2 inch to 2 inch deep. Features a flap that folds under and locks onto the front corner of most frames. Corrugated Protectors ship flat and are easily assembled. 500 per case.