Panasonic Smoke Cut FilterThe ET SFR330 Replacement Smoke Cut Filter is designed to prevent the entry of not only dust, but also fine smoke particles, such as those used for special effects at events and stage performances. It is compatible with PT RQ13K, PT RZ12K, and PT RS11K projectors. Cleans the air that flows through the projector intake, helping maintain image clarity, brightness, and overall reliability in challenging environmental conditions. When venues deploy fog