SOSS Invisible Hinge System, Model #418

Underwriters Laboratories awarded invisible hinge model #418 a 3-hour fire rating. Use on hollow/sheet metal, tin clad, steel composite or wood core swinging fire doors and frames.

418-UNP Soss 1-3/4 Invisible Hinge for Fire Rated Applications in

SOSS Invisible Hinge System, Model #418PT

Soss Hinges Authentic Quality

Fully mortised into door and frame so that hinge cannot be seen from either side when closed Riveted steel hinge pin is non-removable Opens 180

SOSS Invisible Hinge Model 218 for 1-3/4 Thick Material, 20 Minute Fire Rated, Zinc, Bright Brass Exterior Finish, Model Number 218US3, 10 x 1.5

Soss RGB100, Router Guide Bushing and Locknut

For use with 1-3/4 to 2 thick material Open 180 degrees and swings in one direction 20/90/180 minute UL fire rating Riveted steel hinge pin is

SOSS 418SS Stainless Steel 20/90/180 Min. Fire Rated Hinge for 1.75 Doors, Satin Stainless Steel Exterior Finish, Black, Model Number: 418SSUS32D

SOSS 4-5/8 (117mm)H Heavy Duty Invisible Hinge - EACH (Satin

SOSS 418 Alloy Steel 20/90/180 Min. Fire Rated Hinge for 1.75

Soss 100CUS4, #100 Invisible Hinge Satin Brass (Sold as Pair

SOSS Invisible Hinge Archives - SOSS Door Hardware