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When it comes to upgrading your interior doors, choosing the right Tubular Lever is essential. The LOCGUARD GF600S Tubular Lever – GF Series is a high-performance door handle solution designed for both residential and commercial use. Known for its durable PVD finishes and smooth operation, this lever offers a reliable way to enhance security and style.

In this blog, we’ll explore how the LOCGUARD GF600S works, its key benefits, applications, and how to choose the right finish for your needs.

What is the LOCGUARD GF600S Tubular Lever?

The LOCGUARD GF600S is a tubular lever door handle – a complete set including two levers (interior and exterior), a tubular latch, and mounting screws. Unlike separate lever-and-plate designs, the GF Series features a compact rose (circular cover plate) for a minimalist look.

The GF600S model belongs to LOCGUARD’s GF Series, known for:

  • Smooth spring-assisted return – The lever automatically returns to horizontal.

  • PVD finish options – Superior durability against scratches and tarnish.

  • Universal handing – Reversible for left or right-handed doors.

Key difference from lever-on-plate: The GF600S uses a small circular rose (typically 50-60mm diameter) instead of a large rectangular plate, making it ideal for newer doors or where you want a cleaner, less obtrusive look.

Key Benefits of the LOCGUARD G600S

1. Premium PVD Finish (SN/MB/PVD)

The standout feature is the PVD (Physical Vapor Deposition) coating. Unlike standard paint or plating, PVD bonds to the metal at a molecular level, offering:

  • Scratch resistance – 5-10x harder than standard finishes

  • Tarnish-proof – Will not fade or discolor over time

  • Corrosion resistant – Ideal for humid environments (bathrooms, coastal areas)

Finish codes explained:

  • SN – Satin Nickel (classic, matches most décor)

  • MB – Matt Black (modern, bold statement)

  • PVD – Refers to the coating process itself (available in various colors)

2. Ergonomic Lever Design

The GF600S lever features a comfortable grip profile, reducing hand strain. This meets ADA accessibility standards because levers require no twisting – simply push down.

3. Easy Retrofit Installation

The tubular design fits standard door preps:

  • Backset: 60mm or 70mm (check your door)

  • Bore hole: 54mm diameter

  • Edge hole: 25mm diameter

If your existing handle uses the same prep, installation takes 10-15 minutes with just a Phillips screwdriver.

4. Smooth, Quiet Operation

LOCGUARD uses nylon latches instead of all-metal ones, resulting in quieter latching and less wear on the strike plate.

Applications: Where to Use the GF600S

 
 
Setting Recommended Finish Why
Bedroom doors SN (Satin Nickel) Classic, matches any color scheme
Modern apartment MB (Matt Black) Complements black light switches and hinges
Bathroom door PVD (any) Resists humidity and frequent use
Office interior SN or MB Professional look, easy to clean
Rental property PVD Satin Nickel Most durable, reduces maintenance calls

Not recommended for: External entrance doors (use a deadbolt or heavy-duty lockset instead).

How to Choose the Right Finish for Your Needs

  • Choose SN (Satin Nickel) if you want a timeless, versatile finish that hides fingerprints well.

  • Choose MB (Matt Black) if you are creating a modern, minimalist interior and don’t mind occasional wiping.

  • Choose PVD variants if maximum durability is your priority – especially for rental properties or high-traffic areas.

Installation Overview (15-Minute DIY)

Tools needed: Phillips screwdriver only.

Steps:

  1. Remove old handle by unscrewing the interior rose.

  2. Remove the old latch from the door edge.

  3. Insert the LOCGUARD latch – ensure the angled side faces the door frame.

  4. Insert the spindle through the latch.

  5. Attach the exterior lever, then the interior lever.

  6. Secure both roses with screws – do not overtighten.

  7. Test: The lever should spring back from 90°.

Full instructions are included. If your door has non-standard prep, consult a locksmith.

Frequently Asked Questions (FAQ)

Q1: Is the LOCGUARD GF600S suitable for external doors?

A: No – this is an interior door handle. It lacks weather sealing and high-security features. For external doors, look for LOCGUARD’s heavy-duty deadbolt series or add a separate deadbolt above this lever.

Q2: What is the difference between GF600S and GF600 (without “S”)?

A: The “S” typically indicates Small Saw Hole Size where the handle installed. GF600 model lockset have the 75mm cover, but GF600S model lockset have the 65mm cover. Try ensure the door saw hole diameter before for the installation where the size can cover the door hole for replacement

 

Q3: What is the backset measurement for the GF600S?

A: Check the official product page – LOCGUARD GF Series typically offers both 60mm and 70mm options. Measure from your door edge to the center of the existing bore hole before ordering.