Kale Mortise Safety Locks

Kale Mortise Safety Lock Selection Guide

When replacing an existing safety lock, first check the model code. If it cannot be identified, compare lock-body, faceplate, cylinder centre, bolt and strike dimensions. A mismatch may require additional door or frame work.

156 F Prazis Mortise Safety Lock

Kale Prazis 156 F is described for wooden and metal doors. Its product description lists a galvanized steel body, chrome-plated faceplate, nickel-plated strike and a single-throw chrome-plated zamak bolt.

Its single-throw mechanism distinguishes it from the two- and three-throw 157/189 products in the category.

Kale 157 Mortise Safety Lock

Kale 157 is a two-throw model for wooden and metal doors. Its product description lists a galvanized steel body, brass-plated steel faceplate/strike and an MS 58 brass bolt.

Kale Prazis 157 F

Kale Prazis 157 F is another two-throw model for wooden and metal doors. The product description also includes package/key information, so exact contents should be confirmed before ordering.

189 3M – Three Bolts, Two Throws

Kale 189 3M is described with three nickel-plated steel bolts and a two-throw mechanism.

The frame-side strike arrangement must match the three-bolt construction.

189 3MF Prazis – Three Bolts, Two Throws

Kale Prazis 189 3MF is the Prazis three-bolt, two-throw variant in the product range. Model code and package contents should be checked separately from 189 3M.

189 4M – Four Bolts, Three Throws

Kale 189 4M is described with four nickel-plated steel bolts and a three-throw mechanism for wooden and metal doors.

189 4MF Prazis – Four Bolts, Three Throws

Kale Prazis 189 4MF is the Prazis four-bolt, three-throw model. Verify alignment between all four bolts and the existing frame-side strike openings.

189 F Prazis Mortise Safety Lock

Kale Prazis 189 F is described as a three-throw model with a nickel-plated steel bolt for wooden and metal doors.

One, Two and Three Throws

Product specifications describe 156 F as single-throw, 157 and 189 3M/3MF as two-throw, and 189 4M/4MF plus 189 F as three-throw products. Throw count must be considered together with mechanical compatibility rather than selected in isolation.

Three-Bolt and Four-Bolt Mechanisms

189-series product specifications describe 189 3M and 189 3MF with three bolts and 189 4M and 189 4MF with four bolts. Changing bolt count can also affect the frame-side strike arrangement.

Prazis and Standard Models

The category contains products listed as Kale and Kale Prazis. Prazis models commonly include an “F” in the product code, such as 156 F, 157 F, 189 3MF, 189 4MF and 189 F.

Do not infer technical specifications from the “F” suffix alone; verify each exact product description.

Wooden and Metal Door Applications

Products in this category are described for wooden and metal door applications. Exact lock-body, faceplate, cylinder-centre and strike dimensions still need to match the individual door.

Is the Cylinder Included?

“Cylinder mortise safety lock” describes a lock body intended to operate with a compatible cylinder. Do not assume that the cylinder itself is included in every package.

For cylinder options, see Kale Lock Cylinders.

Faceplate, Strike and Finish

Product descriptions list steel faceplates and strikes with chrome, nickel or brass-plated finishes depending on model. Some 189-series descriptions mention nickel plating as an option. Mechanical strike compatibility is more important than finish alone.

Check Certification Per Model

Most product descriptions in this category list TS EN 12209. Certification and technical documentation should nevertheless be checked on the exact model being purchased.

Mortise Safety Lock Models

• 156 F – Prazis, single-throw bolt.
• 157 – two-throw brass bolt.
• 157 F – Prazis, two-throw brass bolt.
• 189 3M – three bolts, two throws.
• 189 3MF – Prazis, three bolts, two throws.
• 189 4M – four bolts, three throws.
• 189 4MF – Prazis, four bolts, three throws.
• 189 F – Prazis, three-throw bolt.

Mortise Safety Lock Checklist

• Model code: identify the complete existing code where possible.
• Door type: confirm the wooden/metal door and existing lock cut-out.
• Throw count: identify one, two or three throws.
• Bolt structure: compare single, three-bolt or four-bolt construction.
• Body and faceplate: match the existing door dimensions.
• Strike: confirm frame-side bolt openings and strike compatibility.
• Cylinder: verify cylinder dimensions and lock-body compatibility.
• Package contents: confirm whether cylinder, keys, strike and other parts are included.

Related Categories

For other Kale lock families, see Kale Lock. For cylinder options use Kale Lock Cylinders, or browse Cylinder Mortise Locks for standard mortise-lock applications.

Kale Mortise Safety Lock Prices

Kale mortise safety lock prices vary according to model code, Prazis or standard range, bolt construction, number of throws, materials/finish and package contents. With similar 189-series names, compare the complete model code before comparing price.

Frequently Asked Questions

Is a mortise safety lock the same as a standard mortise lock?

No. Intended use and mechanism vary by model; safety locks are generally considered for entrance or supplementary-security applications.

Are 157 and 157 F the same lock?

No. They are separate product codes, even though they are related to the same general series. Check package and technical details separately.

What is the difference between 189 3M and 189 4M?

Product specifications describe 189 3M as three-bolt/two-throw and 189 4M as four-bolt/three-throw.

Is the cylinder included with the safety lock?

Do not assume inclusion based on the name. Verify package contents for the exact product.

Can these locks be used on both wooden and metal doors?

Products in this category are described for wooden and metal doors, but the individual lock cut-out and dimensions must still match.

Why do mortise safety lock prices vary?

Model, throw count, bolt construction, Prazis/standard range, materials/finish and package contents can affect price.