The Dometic RV Furnace Access Door provides easy maintenance access and ensures that your furnace has adequate ventilation and airflow.• Ensures safety and provides access for maintenance and repairs• Allows air to circulate around the furnace• Supplies sufficient air to help prevent overheating• Protects your furnace from dust, debris, and moisture• Fits Dometic RV Furnace Models DFSAD12, DFSD12, DFSD16, and DFSD20• Dimensions: 14-3/8"W x 9-3/8"H x 1/4"D Protects furnace from dust, debris, & moisture Measures 14-3/8""W x 9-3/8""H x 1/4""D | Dometic RV Furnace Small Access Door, Black