DDSS001-ANSI-1 4.5x4.5x4.6
D&D Hardware
ANSI/BHMA A156.1 GRADE 1 2,500,000 cycles test, UL 10C fire rated 3 hours
Stainless Steel
Silver
hotel, apartment, commercial, office, etc.
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Ball bearing butt hinge can be in grade 201/304/316 stainless steel material, square corner, template drilled, button tipped five knuckles, UL Listed (3 hour fire rated), with UL Mark, ANSI/BHMA A156.1 Grade 1 certified, suitable for use on fire rated door, with suitable screw pack.
The National Fire Protection Association (NFPA) publication number 80, Standard for Fire Doors and Windows establishes the hardware requirements for fire-rated openings with builders’ hardware. All hardware installed on fire-rated openings must be listed for use on fire-rated openings.
Introducing D&D 4.5" x 4.5" Heavy-Duty Stainless Steel Hinge, engineered to withstand the test of time and traffic. While most commercial hinges are tested to 1 million cycles, this hinge has been rigorously proven through 2,500,000 cycles of testing, far exceeding the BHMA/ANSI Grade 1 standard.
Crafted from solid stainless steel with a substantial 4.6mm thickness, it is built to support the heaviest doors in high-abuse environments like hospitals, schools, and main entrances. This hinge doesn't just promise longevity; it guarantees it, ensuring decades of reliable, maintenance-free operation and eliminating the costs of premature replacement.
Key Highlights:
Certified Superiority: Independently tested to 2.5 million cycles (2.5x the Grade 1 requirement).
Robust Construction: Made from solid stainless steel, measuring 4.5" x 4.5" with a 4.6mm thickness.
Built for Heavy Duty: Designed to handle the heaviest doors and highest frequency of use.
Total Peace of Mind: Drastically reduces maintenance costs and callbacks, protecting your reputation.
Ball bearing butt hinge can be in grade 201/304/316 stainless steel material, square corner, template drilled, button tipped five knuckles, UL Listed (3 hour fire rated), with UL Mark, ANSI/BHMA A156.1 Grade 1 certified, suitable for use on fire rated door, with suitable screw pack.
The National Fire Protection Association (NFPA) publication number 80, Standard for Fire Doors and Windows establishes the hardware requirements for fire-rated openings with builders’ hardware. All hardware installed on fire-rated openings must be listed for use on fire-rated openings.
Introducing D&D 4.5" x 4.5" Heavy-Duty Stainless Steel Hinge, engineered to withstand the test of time and traffic. While most commercial hinges are tested to 1 million cycles, this hinge has been rigorously proven through 2,500,000 cycles of testing, far exceeding the BHMA/ANSI Grade 1 standard.
Crafted from solid stainless steel with a substantial 4.6mm thickness, it is built to support the heaviest doors in high-abuse environments like hospitals, schools, and main entrances. This hinge doesn't just promise longevity; it guarantees it, ensuring decades of reliable, maintenance-free operation and eliminating the costs of premature replacement.
Key Highlights:
Certified Superiority: Independently tested to 2.5 million cycles (2.5x the Grade 1 requirement).
Robust Construction: Made from solid stainless steel, measuring 4.5" x 4.5" with a 4.6mm thickness.
Built for Heavy Duty: Designed to handle the heaviest doors and highest frequency of use.
Total Peace of Mind: Drastically reduces maintenance costs and callbacks, protecting your reputation.


| ANSI/BHMA A156.1 Butts and Hinges | ||
| Grade | Model | Size |
| Grade 1 | DDSS001-ANSI-1 | 4.5"x4.0"x4.6mm 4.5"x4.5"x4.6mm 5.0"x4.0"x4.8mm 5.0"x4.5"x4.8mm 5.0"x5.0"x4.8m |
| Grade 2 | DDSS001-ANSI-2 | 4.5"x4.0"x3.4mm 4.5"x4.5"x3.4mm 5.0"x3.5"x3.7mm 5.0"x4.0"x3.7mm 5.0"x4.5"x3.7mm 5.0"x5.0"x3.7mm |



| ANSI/BHMA A156.1 Butts and Hinges | ||
| Grade | Model | Size |
| Grade 1 | DDSS001-ANSI-1 | 4.5"x4.0"x4.6mm 4.5"x4.5"x4.6mm 5.0"x4.0"x4.8mm 5.0"x4.5"x4.8mm 5.0"x5.0"x4.8m |
| Grade 2 | DDSS001-ANSI-2 | 4.5"x4.0"x3.4mm 4.5"x4.5"x3.4mm 5.0"x3.5"x3.7mm 5.0"x4.0"x3.7mm 5.0"x4.5"x3.7mm 5.0"x5.0"x3.7mm |

Please note: Our certificates will be updated. To view the latest version of the certificate, please click on this link.

Please note: Our certificates will be updated. To view the latest version of the certificate, please click on this link.

Contact us:
David Jian
Tel / WhatsApp / Wechat:+86-13929037292
Email:sales@danddhardware.com
TEL:+86-750-3856396
FAX: +86-750-3856395
Address: 12th Floor, Building 2, No.898, KeChuang Technical Zone,Jiangmen Avenue, Pengjiang District, Jiangmen City, Guangdong, China 529000
Contact us:
David Jian
Tel / WhatsApp / Wechat:+86-13929037292
Email:sales@danddhardware.com
TEL:+86-750-3856396
FAX: +86-750-3856395
Address: 12th Floor, Building 2, No.898, KeChuang Technical Zone,Jiangmen Avenue, Pengjiang District, Jiangmen City, Guangdong, China 529000