Martin's 690 Liners Martin's 690 Liners Martin's 690 Liners Martin's 690 Liners 1 Pan, 1 Middle Level & 2 Shelves 1 Pan Liner (oversized to 17"x27"), 1 Middle Shelf w/ cutout (14"x24") and 2 Shelf Liners (8.5"x14") for Martin's 690. Please refer to the chart above & carefully select the cutout position for your middle shelf. These will not work if your upper ramp is fixed in place. You will need to lift the ramp to place the middle shelf liner down. Liners can be attached to the cage with safety pins (not included). Visit our Cage Liner F.A.Q.'s for more information regarding use and care.