| Specification Criterion | Grade 1 (D&D Certified) | Grade 2 (D&D Certified) | Grade 3 (Reference) |
| Cycle Test Requirement | 2,500,000 cycles | 1,500,000 cycles | 350,000 cycles |
| Bearing Construction | Four ball bearing (4BB) | Two ball bearing (2BB) | Plain / light duty |
| Hinge Types | Heavy duty · Full mortise | Full mortise · Standard weight | Residential butt |
| Typical Service Life @ 100 Cycles/Day | 68+ years tested | 41+ years tested | <10 years tested |
| Traffic Profile | High-traffic / abuse-prone | Moderate commercial traffic | Light residential |
| Total Cost of Ownership | Lowest — no early replacement | Low — right-sized spec | High — repeat labor |
| Picture |  |  |  |  |  |  |  |  |  |  |  |
| Size (H × W × T) | 4.5" × 4.0" × 4.6mm | 4.5" × 4.5" × 4.6mm | 5.0" × 4.0" × 4.8mm | 5.0" × 4.5" × 4.8mm | 5.0" × 5.0" × 4.8mm | 5.0" × 3.5" × 3.7mm | 5.0" × 4.0" × 3.7mm | 5.0" × 4.5" × 3.7mm | 5.0" × 5.0" × 3.7mm | 4.5" × 4.0" × 3.4mm | 4.5" × 4.5" × 3.4mm |
| Bearing Type | 4 Ball Bearing | 4 Ball Bearing | 4 Ball Bearing | 4 Ball Bearing | 4 Ball Bearing | 2 Ball Bearing | 2 Ball Bearing | 2 Ball Bearing | 2 Ball Bearing | 2 Ball Bearing | 2 Ball Bearing |
| Weight | Heavy Weight | Heavy Weight | Heavy Weight | Heavy Weight | Heavy Weight | Standard Weight | Standard Weight | Standard Weight | Standard Weight | Standard Weight | Standard Weight |
| Certification | ANSI / BHMA Grade 1 | ANSI / BHMA Grade 1 | ANSI / BHMA Grade 1 | ANSI / BHMA Grade 1 | ANSI / BHMA Grade 1 | ANSI / BHMA Grade 2 | ANSI / BHMA Grade 2 | ANSI / BHMA Grade 2 | ANSI / BHMA Grade 2 | ANSI / BHMA Grade 2 | ANSI / BHMA Grade 2 |
| UL 10C | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 | 3 Hours Fire Rated, R38013 |
