Arlington 20.5 Cubic Inch Non-Metallic Adjustable In/Out Box

Arlington’s IN/OUT BOX for ceiling fixtures adjusts up to 1-1/2" to accommodate varying ceiling thicknesses, like single or double drywall. Product Features Always accessible depth adjustment screw allows depth adjustment before or after ceiling is in place Mounts securely to joist in new construction Listed for fixture support up to 50 lbs 2-hour fire rating