National Hardware N185-199 V521 3-1/2" Spring Hinge, Steel, Brass, 30 lb Closing Speed Is Adjustable Manufactured With Cold-Rolled Steel Tension Is Adjustable Fits Standard Hinge Cutout 1/4 in radius round corners Automatically closes doors 1/4 Inch Radius Round Corners Fully adjustable with wrench provided Lifespan warranty against defects in material and workmanship Easy to install Use anti-friction hinges with spring hinges for best spring performance Cold-rolled steel hinges with a decorative-plated finish have the added protection of baked-on lacquer, which helps retain the original beauty under ordinary condition However, exposure to moisture, strong cleaning solutions, paint remover or other chemicals may break down the protective coating and cause the finish to fail Application: For use in basement, garage, kitchen and powder room Suitable for: Hinge Cutout and Fire Doors Up to 3 ft x 7 ft National Hardware Spring Hinge, 30 lb Weight, Wall Mounting, Number of Mounting Holes: 6, Steel, Brass, Suitable for: Hinge Cutout and Fire Doors Up to 3 ft x 7 ft Finish Brass Design Spring Hinges Material Steel Length 3-1/2" Pin Type Fixed Radius 1/4" Width 3-1/2" Hinge Type Surface Mount Number of Holes 6 Self Closing Yes Number in Package 1 pk Hardware Included Yes Packaging Type Carded Each Weight 0.700 LB Safe Working Load 30 lbs. Spring Return Yes Adjustable Yes Product Type Spring Hinge Mounting Type Wall Weight Capacity 30 lb Number of Mounting Holes 6 Height 3-1/2 In. Type Residential/Commercial Corner Type 1/4 In. Radius Finish Family Brass Width 3-1/2 In. Holes per Leaf 3 Holes Per Leaf