About this item

• PREMIER QUALITY: KNOBWELL 4 inch black door hinges are made from high-qulity iron, with Matte Black finish. Our round black hinges are Thick and Heavy Duty, which can be used on interior or exterior doors without problem.
• EASY INSTALLATION: Every single door hinge includes detailed installation document in English, from the tools you need to the final check. All people, even without any experience, can install the black hinges quickly.
• PACK INCLUDES：4"x4" door hinges x 3 Pack, 8 long screws per hinge, Installation Document. The rounded door hinges can be used on left or right-handed doors, which is a perfect choice to combine with the matte black door levers in our store.
• SPECIFICATIONS: Size: 4 inch X 4 inch; Corners: 5/8 inch radius, solid and heavy duty, can easily replace most other door hinges. Our interior black door hinges are pre-lubricated, no worry about squeaking, suitable for bedroom, guestroom, office and any place where quietness is needed.
• WIDE APPLICATIONS: These round door hinges 4in could be mounted on interior doors like cabinet, wooden door, salon door, shutters, skylights, toy box, etc. heavy duty enough for exterior doors such as garage, playhouse, entryway, gate doors and more. We recommend use at least 2 hinges per door.
• LIFETIME WARRANTY: The black door hinges have passed 24 hours salt spray text and can be used for long-time. KNOBWELL offers 1-year trial and lifetime after-sale service. If you have any problem at anytime(including missing parts/installation question), please feel free to contact us and we will certainly offer you satisfactory method.

Privacy (Interior Locking Lock)

• Key Features: No key required; can be locked from the inside and opened from the outside with a tool if necessary.
• Applicable Scenarios: Bedrooms, bathrooms, studies, and other rooms requiring internal locking.

Passage (Non-Locking Passage Lock)

• Key Features: Controls door opening and closing without a locking function or key.
• Applicable Scenarios: Hallways, closets, passage doors, and other areas where locking is unnecessary.

Dummy (Push/Pull Decorative Lock)

• Key Features: No key, no locking function, and no turning mechanism—designed purely for pushing and pulling.
• Applicable Scenarios: Pantry doors, decorative doors, and other doors that only require push/pull functionality.

Keyed Entry (Different Keys)

• Key Features: Each lock corresponds to a unique key, ensuring security and privacy. Lockable from both inside and outside.
• Applicable Scenarios: Front doors, main entrances, bedrooms, bathrooms, and other spaces requiring high privacy.

Keyed Entry (Same Key)

• Key Features: Allows multiple locks to be opened with the same key, simplifying management and enhancing convenience.
• Applicable Scenarios: Office buildings, shopping malls, hotels, apartments, schools, gyms, storage cabinets, etc.

Shipping

• Free shipping on all orders,no minimum price limited.
• Orders from the following countries, we will arrange shipments from local warehouse:United States,Canada,Australia,United Kingdom
• Shipping time is approximately 2 working days form the process date via Fedex. Please note that public holidays, national holidays and peak seasonal shipping periods could produce longer delivery times.

Return & Warranty

• Please check the items and accessories once you receiving KNOBWELL package, and if there's any quality problem or item missing, please do contact us within 48 hours, and we will arrange refund or replacement as you need.
• 3 Months Warranty Refund
• 1 Year Warranty Free Replacement
• If you have any questions, please contact us through this email:service@knobwellstore.com, we have a professional customer service team will deal with it for you.