Manufacturer's Description:
Accessories: Accessory is used with the following product(s): BL1, BL16, BL5016, BT1, BT5016, BUL1, BUL16, I2, IL116, IT216, IUL516.
Honeycomb pattern, black anodized, aluminum cut-off louver to reduce glare. Clips onto an MR16 lamp inside the fixture.