Speedglas 9100X inner protection plate is designed to protect the inner surface of the cassette against sparks and splashes. Damage caused by sparks or splashes due to improper use of the inner protection plate with the cassette will void the warranty. Clean regularly with a soft cloth and replace if scratched or dented. The inner protective plate protects the inner surface of the cassette from sparks and splashes. Incorrect use of the cassette will void the warranty in the event of damage to the glass from sparks or splashes. The Speedglas 9100X inner protection plate protects the inner surface of the cassette from sparks and splashes.