Yes, you can caddy and "bat wing" clip your MC to the independent ceiling grid type wires to support a 2x4 lay-in fixture, but only if the following conditions are met: The wires are securely attached to the ceiling structure. They should not be sagging or loose. The caddy or "bat wing" clips are listed for the purpose of supporting MC cable. The MC cable is properly secured to the caddy or "bat wing" clip.

This method of support is acceptable for MC cable that is used to supply power to the light fixture. It is not acceptable for MC cable that is used to support the weight of the light fixture.

Additional Considerations: If the ceiling grid wires are made of a non-metallic material, such as aluminum or plastic, you may need to use special clips or hardware to ensure a secure connection. Be sure to route the MC cable in a way that it will not be subject to excessive stress or damage. Leave some slack in the MC cable to allow for movement of the light fixture. Flag for review