UL listed for fire doors or with automatic hold-open feature. For homes with heavy doors and for frequently used office doors. Closing speed and latching speed closes heavy door and doors with tight seals. Mounts at top of door requiring hand tool only. Made of rugged die-cast and can be painted. Can be mounted on either side of the door. Standard mount or top-jamb mount. Grade 3. No. 20375/DM103ULB: UL listed, brown No. 20373/DM103ULI: UL listed, ivory No. 20675/DM103HOB: Hold-open, brown No. 20673/DM103HOI: Hold-open, ivory