No. Each LED corn bulb is sized to match your existing bulbs wattage. Since LED lights are more energy efficient, they require a much lower wattage than traditional HID lamps. The larger the wattage, the larger the corn bulb will be.
For example: A 54W corn bulb that replaces a 200W Metal Halide or HPS bulb, would be about 6"(L) x 3.6875"(W) x 10.6875"(H). However, a 240W corn bulb that replaces a 1000W MH or HPS bulb, would be about 14"(L) x 5"(W) x 5"(H).