Heavy Duty 4 Inch Double Spring Door Hinge Set In 304 Stainless Steel With Integrated Spring Tension Adjustment No Fixing Pin Required For 0.98 To 1.5 Inch Doors 25 To 38 mm Thick, Supports Up To 77 Lbs Per Pair, 3mm Thickened Steel Plate Ranbo

Premium 4-inch double spring door hinges for heavy-duty use
✔️ 3mm thick 304 stainless steel, fits 25-38mm doors, supports 77 lbs per pair

These hinges are tough components for doors in homes, offices, or warehouses, ensuring automatic closing and reliable performance in high-traffic spots.

✅ Fits doors from 0.98 to 1.5 inches (25 to 38 mm) thick, handling up to 77 lbs per pair for sturdy support
✅ Built with 3mm thickened 304 stainless steel for extra durability in frequent use
✅ Includes integrated spring tension adjustment, no extra pin needed, for easy speed control
✅ Offers two-way opening with automatic closing, made from rust-resistant matte black finish for long-lasting appeal

💡 What makes adjustable spring tension in door hinges a smart choice for setups?
Tension adjustments help doors work smoothly in everyday scenarios. Here's the breakdown:
- Allows fine-tuning for various door weights to avoid issues like sticking
- Boosts safety by preventing doors from slamming shut unexpectedly
- Saves energy with auto-closing features that seal gaps effectively
- Keeps hinges lasting longer by reducing wear from improper tension