KSDCMRS 4" Black Heavy Duty Ball Bearing Door Hinges, 4 Pack

KSDCMRS 4" Black Heavy Duty Ball Bearing Door Hinges, 4 Pack

• [Maximum Security with NRP Design] Engineered with a Non-Removable Pin (NRP), these hinges provide an essential layer of security for outswing doors. The tamper-proof pin cannot be removed from the outside, making them the perfect choice for entryways, garages, and gates.
• [Whisper-Quiet Ball Bearing Operation] Equipped with 4 high-precision lubricated ball bearings, our hinges ensure a silky-smooth, silent swing. Eliminate frustrating door squeaks and metal-on-metal friction, even under the stress of heavy, high-traffic doors.
• [Industrial-Grade Durability] Tested for over 500,000 cycles and 90-minute fire-rated. These 3.0mm thick heavy-duty hinges are built for longevity. Whether it's the 304 stainless steel for coastal rust-resistance or the electroplated matte black for modern aesthetics, they are built to last.
• [Weather-Proof & Corrosion-Resistant] Our hinges undergo a rigorous 96-hour salt spray test, far exceeding industry standards. Designed to withstand humid bathrooms, coastal salt air, and harsh outdoor elements without rusting, chipping, or flaking.
• [Precision Fit & Easy Installation] Standard 4" x 4" square corner design fits most American residential and commercial door frames. Each pack includes reinforced M4.8x35mm matching screws for a flush, sturdy, and professional DIY or pro-level installation.