400mm 400mm Large Honeycomb PanelThis 400 400mm large size honeycomb working table can protect the desk from laser damage and bring a better engraving cutting effect Effective Smoke ExhaustLONGER honeycomb working table has a 9mm aperture size which has the best airflow during use and more effective smoke exhaust Durable MaterialMade of iron and aluminum it is more durable and has faster heat dissipation suitable for most laser engravers Protect desk from laser damagebetter engraving cutting effect 15 7 15 7 0 86 400 400 22mm³ large size honeycomb working table 9mm aperture size the best airflow during use more effective smoke exhaust Made of iron and aluminum more durable and faster heat dissipation Suitable for most laser engraver