Model 418IC Alloy Steel Satin Brass Invisible Closer Hinge

SOSS® Invisible Hinge model #418IC is ideally suited for most types of doors that are 1-3/4" (44mm) thick. The model #418IC is made of alloy steel materials. The SOSS Invisible Closer gives you a door closer that is totally invisible from either side when the door is closed. The closure rate is completely adjustable with an allen wrench after installation, and does not require removal of the closer. Installation can be either inside the door itself or inside the door jamb. SOSS® Invisible Hinges open a full 180° and are a single action hinge.
The Underwriters Laboratories labeled the model #418IC SOSS Invisible Hinge can be used on hollow metal, sheet metal, tin clad, and steel composite swinging type fire doors and frames rated up to and including three hours.They can also be used on wood core doors and frames rated up to 20 minutes. Additionally, they can be used on wood/plastic composite doors constructed with Georgia Pacific FSI or FSII banding for a rating up to and including 90 minutes.
Allow one closer for every 55 lbs of door weight or portion thereof. Fire rated doors also require one fire rated hinge for every 20″ of door height or fraction thereof. The calculation that requires more hinges is the total number of hinges required.
Recommended spacing for use of one closer is half the distance from the center line of the door to the center line of the top hinge. Please reference the hinge spacing drawing.
Finish: Alloy Steel Satin Brass
Application: Full Sized Entry, Metal, Wood
Minimum Thickness: 1-3/4" (44mm)
Opening Angle: 180°
Fire Rating: 20/90/180 Minutes
Screw: Wood and Machine
Spring Closer: 418IC