7BACK WFFireplaceAshDumpD Cast-iron fireplace ash-dump door.    An ash-dump door is a little "trap door" you'll find in the bottom of most fireplaces where customers can sweep their fireplace ashes into an ash pit located below the fireplace.   It's access hole is the size of a firebrick. Outside dimensions are: 5 1/2" x 9 1/2" Price:  $17.52   Quantity: ◊