Lockwood FD461SS + 2x DC250 B/C N/C + FD100 Satin Stainless Steel FD461 300006 - primehardware
Lockwood FD461SS + 2x DC250 B/C N/C + FD100 Satin Stainless Steel FD461 300006 - primehardware
Lockwood
SKU: FD461 300006

Lockwood FD461SS + 2x DC250 B/C N/C + FD100 Satin Stainless Steel FD461 300006

$3,558.90 $3,668.95
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Lockwood

Lockwood FD461SS + 2x DC250 B/C N/C + FD100 Satin Stainless Steel FD461 300006

Product code: FD461 300006

This Lockwood concealed fire-door closing set is supplied for double doors and includes two DC250 hydraulic closer units (back-check, non-hold-open) with an FD100 connecting rod and coordinator. Concealed within the door and frame, it provides controlled closing and correct leaf sequencing for fire and smoke doors.

Satin Stainless SteelFire & smoke doors

Specifications

Application Double doors (concealed)
Includes 2 × DC250 hydraulic closer units (back-check, non-hold-open) + FD100 connecting rod
Function Concealed closing with door coordination
Mounting Concealed transom
Finish Satin Stainless Steel

Door Closer Functions Explained

Electromagnetic hold-open. Holds the door open electrically during normal use and releases it automatically to close if the fire alarm activates or power fails — the compliant way to hold a fire door open.
Adjustable closing & latching speed. Separate valves let you tune the main closing sweep (about 180°–15°) and the final latching action (about 15°–0°).
Non hold-open versions of this closer simply close after every use, and are the type required on most fire-rated doors.
Other functions offered across this closer range: Backcheck slows the door as it nears the fully open position so it can't slam into an adjacent wall (protecting the hinges, frame and wall) and delayed action holds the door open, or closes it slowly, for the first part of the swing to give extra time for wheelchairs, prams and trolleys. This model includes the functions listed above.

Power Size Guide

Power size Recommended door width (mm) Max door weight (kg) Closing torque (Nm)
EN 1 750 20 9–<13
EN 2 850 40 13–<18
EN 3 950 60 18–<26
EN 4 1100 80 26–<37
EN 5 1250 100 37–<54

Door height should be a maximum of 2340 mm.

Standards & Compliance

  • Designed for concealed fire and smoke door assemblies.

Available Finishes

Satin Stainless SteelSilverBlackGold

Swatch colours are indicative only. Living finishes develop a natural patina over time.

Warranty

✓25-Year Mechanical Warranty

Mechanical parts are warranted against defects in materials and workmanship under normal use, when correctly installed. Manufactured by ASSA ABLOY Australia. Lockwood warranty →

Made to order. This finish is made to order. Only Silver and Black are normally held in stock with the supplier — for this finish, call Prime Hardware on 1800 329 028 to confirm availability and lead time.
How does the hold-open / coordinator work?

In normal use the door(s) are held open. When power is cut — for example when a smoke detector activates — the door releases and closes and latches. On double-door units a coordinator closes the leaves in the correct sequence.

Is it fire rated?

Yes. This family is fire tested on fire door assemblies to AS 1905.1:2005 – Part 1: Fire Resistant Doorsets. Check the Standards & Compliance section for the tested duration of this model.

Is it hard-wired?

The electromechanical hold-open runs on 24V DC (±15%, ~60 mA) and is wired into the building's fire-alarm/detection system so it releases on alarm.

What does hold-open mean?

Hold-open lets the door be parked open at a chosen angle and it closes once released. Important: a plain mechanical hold-open must not be used on a fire door — a fire door may only be held open by an approved electromagnetic (fire-alarm released) device, which drops the door shut automatically on alarm or power failure.

What is backcheck?

Backcheck slows the door as it nears the fully open position so it can't be flung into an adjacent wall — protecting the hinges, frame, closer and wall. It is a cushioning feature, not a hold-open, and is useful in windy or exposed locations. Only closers whose title lists backcheck have this fitted.

What is delayed action?

Delayed action holds the door open, or closes it very slowly, through the first part of the swing before returning to normal speed — giving extra time for wheelchairs, prams, trolleys or moving furniture. It is common in hospitals and aged care. Only closers whose title lists delayed action (DA) have this fitted.

What do the EN power sizes mean?

The EN power size (EN 1154) sets the closing force, and each size is defined by the door leaf's width and weight. As a guide: EN1 up to 750 mm / 20 kg, EN2 up to 850 mm / 40 kg, EN3 up to 950 mm / 60 kg, EN4 up to 1100 mm / 80 kg, EN5 up to 1250 mm / 100 kg, EN6 up to 1400 mm / 120 kg. A range such as EN 1–4 means the closer is adjustable across those sizes — a wider or heavier door needs a higher power size.

Is this finish in stock?

Silver and Black finishes are normally held in stock with the supplier. All other finishes (and no-finish/raw components) are made to order — call Prime Hardware on 1800 329 028 to confirm availability and lead time before you order.

What warranty applies?

Lockwood products carry a 25-Year Mechanical Warranty against defects in materials and workmanship. Electrical/electronic components, where fitted, carry a separate electronic warranty. Manufactured by ASSA ABLOY Australia.

How can I get help?

Call Prime Hardware on 1800 329 028, email sales@primehardware.com.au, or visit the showroom at 2/249 Annangrove Road, Annangrove NSW 2156. We can confirm sizing, finishes and matching components before you order.