Extension Spring - 150 Lbs - Silver Emtek 9821332D 3.5 Inch Stainless Steel Heavy Duty Door Hinges with Square Corners (pair) They should be installed with

They should be installed with a mildew resistant silicone tub & shower adhesive

Internal Dimensions: 12

1-3/8 with lip

Four (4) Screw mounting holes

Extension Spring - 150 Lbs - Silver Emtek 9821332D 3.5 Inch Stainless Steel Heavy Duty Door Hinges with Square Corners (pair) They should be installed withEXTENSION SPRING 150 LBS SILVER. Part No: 22307. Includes one garage door spring, 25 inches long, double loop ends for added security. Heavy duty extension spring with 1 8 inch galvanized carbon steel aircraft safety cable. Garage Door Springs rated at 10,000 cycles. Replacement Spring Door Size: Wood Door: 9' x 7', 4 panels, 4 sections; 2 springs per door; Fiberglass Door: 16' x 7', 4 panels, 4 sections. 4 springs on door.