"L" -4x6 "overall frame size: 7x6.5", the inner diameter of the metal ring is 1.25 ". "L" -5x7 "overall frame size: 8x7.5", the inner diameter of the metal ring is 1.25 ". "L" -6x8 "Overall frame size: 9.25x8.75", the inner diameter of the metal ring is 1.25 ". "V" -4x6 "overall frame size: 7.75X6.5", the inner diameter of the metal ring is 1.25 ".