Black Size 3 Door Closer & CoverThe From the Anvil Black Size 3 Door Closer & Cover is a functional solution to many commercial and public building needs where extra protection from fire and drafts is required. This product has a mechanism activated by a spring and an internal spring to help secure the latch bolt in place when the door is closed. This black, heavy duty door closer is suitable for use on double doors, internal doors, fire doors and exit doors requiring frequent use