Spring hinges, also known as self-closing hinges and adjustable tension spring hinges with 4 1/2" x 4" with Square Corners.  The adjustable tension spring in the hinge automatically closes the door helping to minimize any harmful gas fumes from getting into your home or commercial property. 

Product Details / Specifications

• Made of a High Quality Steel and available in the following finishes:  Satin Chrome, Antique Bronze, Polished Brass, Satin Brass, or Prime for Painting
• Adjustable tension for Commercial or Residential applications
• Gauge: 2.7MM, (.106" )
• For Door Thickness:  1 5/8" to 1 3/4"
• All spring hinges include matching screws and hex wrench
• 2 Packs - Sold in Pairs - What is a pair?