









🚪 Elevate your entryway with precision-engineered, fire-rated hinges that mean business.
This 3-pack of 4.5-inch heavy-duty commercial self-closing door hinges by Waterson features UL Listed fire-rated Grade 1 certification, ADA compliance, and a satin brushed stainless steel finish. Designed for durability and precision, these hinges offer fully adjustable closing force and speed, digital tension locking, and weather-resistant construction, making them ideal for demanding commercial environments.



| Material | Stainless Steel |
| Brand | Waterson |
| Product Dimensions | 4.5"L x 4.5"W |
| Finish Type | Brushed |
| Mounting Type | Door Mount |
| Weight Limit | 2.6E+2 Pounds |
| Unit Count | 3.0 Count |
| Color | Satin Brushed |
| Manufacturer | Waterson |
| UPC | 755874933649 |
| Part Number | K51M-450-A3-SQ-US32D-304 |
| Item Weight | 4.8 pounds |
| Item model number | K51M-450-A3-SQ-US32D-304 |
| Is Discontinued By Manufacturer | No |
| Size | 4.5"x4.5" |
| Style | Auto |
| Finish | Brushed |
| Pattern | SA + SA + SA1 (without hold-open function) |
| Number Of Pieces | 3 |
| Maximum Weight Capacity | 2.6E+2 Pounds |
| Included Components | 3mm & 5mm hex wrench, For wood door - Crosshead self-tapping screws (SUS#12-24 UNC-1/2"L), For metal door - Crosshead machine screws (SUS#12x1-1/4"(31.75mm)L) |
| Batteries Included? | No |
| Batteries Required? | No |
G**Y
Great!!!
Great product! Used them on a heavy gate and they worked perfectly.
O**P
Work well, seem temperature sensitive.
I have an arched door that my contractor said couldn’t have a door closure attached. After some research, he came back with a $1500. solution of a door closure that has an adapter that allows it to mount near the crest of the arch. But it was still big and kinda funky for this door. Plus, that’s crazy high for a door closure.I tried Bommer hinges but they were not adjustable and closed too hard.These are adjustable for the open tension and the closing resistance.These are also adjustable for the closing pressure for the last 20degrees of the door closing.I would have given it 5 stars after spending an hour getting it perfectly adjusted. I was amazed and wondered why my contractor and architect didn’t know about these.But they lost a star because if found that when the temperature changes (which it does frequently) the tension changes.They still work great, but I’d like to set it and not worry about the temp change.
M**S
Not heavy duty commercial material, maybe commercial
This set of (3) hinges were installed on a 3 point lock system door where a door closer on the inside doesn’t allow the door to fully open and a closet on the outside would look bad. After replacing all hinges with this set the door didn’t close and I already told the customer this product was going to solve both issues, functionality and looks. Now I ordered a dumper closer device that cost me 125 each to make the doors close as I’m not removing the hinges to install a closer outside and give my customer the opposite of promised.
Trustpilot
2 months ago
2 weeks ago