Project Description

50 LEO

50 Leo M Birmingham Pkwy, Boston, MA 02135

Project Description

50 LEO is a 49-unit luxury new construction condo building situated in the emerging Brighton Corridor. The project manager requested a fire rated hinges solution for their 3-0″ x 7-0″ doors in hollow metal frames.

Waterson Product

K51M-450-A3-US19: Full Mortise 4.5 inch x 4.5 inch, satin matte black, speed control with self-closing mechanism, 90-minute fire rating code.
Fill out the form below and request a trade discount for your project.

Distributor

Unified Door & Hardware Group
Elkridge, MD, 21075

  • #black hinges for doors #fire rated residential doors #matte black #matte black door hinges
  • self closing fire door hinges
  • #black hinges for doors #fire rated residential doors #matte black #matte black door hinges
  • #black hinges for doors #fire rated residential doors #matte black #matte black door hinges

Request For Quote

Please note that Waterson Closer Hinges start from a size of 4″x4″. If you’re in need of smaller self-closing hinges, we’d recommend checking out some other resources! Also, we only provide single acting closer hinges. Thank you.

Recent Post

  • entry door hinges

Typical Problems of Entry Door Hinges: How Can I Fix Them?

December 23rd, 2025|Comments Off on Typical Problems of Entry Door Hinges: How Can I Fix Them?

Usually, it doesn’t start with a falling entry door—it just starts to feel off. Sometimes it begins to creak when opening. It doesn’t line up [...]

  • 6ft tall door hinges

6ft Tall Door Hinges Under Closer Height Limits

December 23rd, 2025|Comments Off on 6ft Tall Door Hinges Under Closer Height Limits

Recently, a customer just shared with us the reason why she chose spring loaded door hinges instead of a door closer on her project: “Just [...]

  • best gate closer in california

Best ADA Gate Closer in California: Key Features for Long Term Use

December 18th, 2025|Comments Off on Best ADA Gate Closer in California: Key Features for Long Term Use

A sagging outdoor gate, a pool enclosure that won’t close cleanly, or a coastal project where the closer failed after one season—these are not installation [...]