Probrico Flat Black Keyed Alike Entry Door Knobs 4 Pack - Secure

In this review the Probrico Flat Black Keyed Alike Entry Door Knobs are evaluated for homeowners and small offices who need consistent keyed entry across multiple doors. The biggest reason to buy is simple: you get four keyed-alike, solid-metal entry knobs with a modern black finish that are easy to install and provide basic ANSI Grade 3 security for interior or exterior doors. Installation hardware is included and all four locks use the same key, which removes the hassle of carrying multiple keys for similar doors.

Key Features

• Material and finish: Stainless steel construction with a flat black finish gives the knobs a durable surface and a contemporary look that resists wear.
• Keyed alike convenience: All four locks open with a single key so users can secure multiple doors without juggling separate keys.
• Adjustable backset: The latch adjusts between 2-3/8 in and 2-3/4 in to fit common door preparations and reduce modification work.
• Door thickness compatibility: Fits doors 1-3/8 in to 1-3/4 in thick, covering standard interior and many exterior residential doors.
• Security bolt: A solid column security bolt provides anti-sawing protection for basic reinforcement of the latch mechanism.
• Simple installation: Comes as a 4 pack with accessories so homeowners can swap multiple knobs in one session with minimal tools.

Who It's For

The Probrico keyed-alike set is best for homeowners, landlords, or small offices that want uniform keys for multiple doors and a consistent, modern look. It is especially useful when replacing several knobs in one home, like bedrooms, bathrooms and an office, or when matching trim and wall colors for a cohesive appearance.

It is not ideal for high-security applications or heavy commercial use where higher ANSI grades or advanced locking cylinders are required. Buyers seeking premium commercial-grade hardware or specialized keyed systems should consider heavier duty options.

Pros & Cons

Pros

• Keyed alike convenience saves time and eliminates multiple keys for similar doors.
• Stainless steel and black finish offer a clean, modern appearance and corrosion resistance.
• Adjustable backset and included hardware make installation straightforward on standard doors.
• Solid column bolt adds protection against sawing attempts compared with cheaper latches.

Cons

• Some users report mixed impressions of overall sturdiness and lock feel, indicating it is best for residential use rather than heavy-duty commercial traffic.
• The latch square plate is not removable, which may require extra routing on atypical door setups.

Specifications

Brand	Probrico
Pack	4 keyed-alike entry knobs
Material	Stainless steel with black finish
Knob diameter	2.09 in (53mm)
Rosette diameter	2.56 in (65mm)
Backset	Adjustable 2-3/8 in or 2-3/4 in
Door thickness	1-3/8 in to 1-3/4 in (35mm to 45mm)

Our Verdict

The Probrico Flat Black keyed-alike set is a practical, cost-effective solution for residential users who want consistent keys and a contemporary finish across multiple doors. It offers easy installation, adjustable backset compatibility, and basic ANSI Grade 3 protection, making it a good value for homes and light-duty office use while not being intended for heavy commercial security needs.

Frequently Asked Questions

Can all four locks be opened with one key?
Yes, the set ships keyed alike so all included locks operate with the same key.

What door thickness and backset will this fit?
It fits doors 1-3/8 in to 1-3/4 in thick and supports adjustable backsets of 2-3/8 in or 2-3/4 in.

Is the latch faceplate removable for retrofitting?
No, the square plate of the latch is not removable, so some doors may need minor routing to fit.