Home / G01 - Fluorescents – Film quality Leds available / FLC41 – Qty- 50. Cage for 4′ single fluoro fixture. – FLC42A Qty- 24. Cage for 4′ double fluoro. FLC41 – Qty- 50. Cage for 4′ single fluoro fixture. – FLC42A Qty- 24. Cage for 4′ double fluoro.