Custom Bespoke Composite Doors & Aluminium and UPVC Panels

Window Locks and Espags

Replacement Locks & Espags for uPVC & Double Glazed Windows

Struggling to find the right replacement window lock? We make it easy. At Double Glazing Parts & Spares, we stock a wide range of window locks and espagnolette (espag) mechanisms suitable for most uPVC, aluminium,& timber window systems – including many models that are now obsolete.

Our selection includes trusted brands such as Avocet, Chameleon, Elite, ERA, Everest, GU, Kenrick, Ideal, MACO, Mila, Nico, ProLinea, Schuco, Securistyle, Spilka, Trident, and Yale, along with a variety of universal window lock options that fit a wide range of systems.

If you’re replacing an older or discontinued window lock, we can help. With over 25 years of experience, we can often identify and supply hard-to-find or obsolete locking mechanisms – simply contact our expert team with the details or a photo of the part you need. Whether you're tackling a repair or a full window refurbishment, our wide product range and reliable support ensure you get the right lock – first time.

Can't find what you're looking for? Email our team at assist@dgpsuk.co.uk

Replacement uPVC window espag locks from brands like Yale, ERA, Avocet and more

What to Check and Measure When Replacing a Window Espag Lock
When choosing a replacement espagnolette (espag) rod, it’s important to measure the following:

  1. Rail length: Full length of the rod, end to end.
  2. Screw hole centres: Most espag rods use the industry standard of 43mm.
  3. Cam height: Height of the projecting locking cam (often a mushroom cam), interchangeable with roller cams.
  4. Backset: Distance from the front face of the gearbox to the centre of the handle’s screw holes.
  5. Rail width: Width of the rod side to side, usually 16mm.

These details will help you find the correct replacement quickly and accurately.

Avocet / WMS Casement Offset Window Lock Espagnolette

This U-rail window lock espagnolette should have either Avocet or WMS printed into the rail.  T..

£7.68 Ex Tax: £6.40

£7.68 Ex Tax: £6.40

Avocet Espagnolette Casement Window Lock

Avocet inline gearbox, 16mm rail width, window lock/espag.Espagnolette (also referred to as 'espag')..

£15.35 Ex Tax: £12.79

£15.35 Ex Tax: £12.79

Avocet WMS Replacement U Rail Espag Casement Window Lock

Replacement Avocet WMS U Rail espagnolette multi point uPVC window lock should have either Avocet or..

£6.90 Ex Tax: £5.75

£6.90 Ex Tax: £5.75

Electric Window Ventilation Control Kit

Electric Window Ventilation Control Kit (ACK4 Actuator, Brackets, and S50-1 Rocker Switch)Achieve pr..

£256.80 Ex Tax: £214.00

£256.80 Ex Tax: £214.00

ERA Shootbolt French Window Lock 800mm

Upgrade your french casement window security with this robust, non-croppable shootbolt locking syste..

£10.79 Ex Tax: £8.99

£10.79 Ex Tax: £8.99

Everest Old Style Replacement 3 Piece Lock

Please Note: This is a replacement part for the old Everest Style 3 Piece LockThis alternative will ..

£16.76 Ex Tax: £13.97

£16.76 Ex Tax: £13.97

Kenrick Sabre Centre Gearbox

KENRICK Sabrelock Window Gearbox - Hook StyleFeatures:17mm Backset43mm screw centres124mm lock posit..

£38.36 Ex Tax: £31.97

£38.36 Ex Tax: £31.97

KENRICK Sentrilock Slimline Window Gearbox - Hook

KENRICK Sentrilock Slimline Window Gearbox - Hook The Sentrilock shootbolt has proved effective..

£22.96 Ex Tax: £19.13

£22.96 Ex Tax: £19.13

Large Ideal Finger Shootbolt

Large Ideal Finger Operated ShootboltFinger operated shootbolt for use on slave doors (top and botto..

£13.28 Ex Tax: £11.07

£13.28 Ex Tax: £11.07

MACO MK1 Espag Gearbox With Cover

MACO MK1 Espag Gearbox With CoverThis MACO MK1 centre case espag gearbox from Maco is a reverse acti..

£11.04 Ex Tax: £9.20

£11.04 Ex Tax: £9.20

MACO MK1 Espag Shootbolt Extension Rods - Croppable

MACO MK1 Espag Shootbolt Extension Rods (pair) - CroppableThis MK1 espag extension rod from Maco is ..

£17.40 Ex Tax: £14.50

£17.40 Ex Tax: £14.50

Maco Offset Window Espag Locking Mechanism

MACO Flat Rail Offset Espag Window Locking MechanismThis Flat Rail Offset Window Lock is the ty..

£15.35 Ex Tax: £12.79

£15.35 Ex Tax: £12.79

Magnetic Window and Door Alarm

Emits piercing alarm when magnetic connection between the two parts is interrupted. Suitable for use..

£3.46 Ex Tax: £2.88

£3.46 Ex Tax: £2.88

Mila Tongue Window Lock Espagnolette

NOW OBSOLETE/ SUITABLE REPLACEMENT BELOW WILL BE SENTThe Mila Tongue Window Lock Espagnolette (also ..

£18.60 Ex Tax: £15.50

£18.60 Ex Tax: £15.50

Pro Gearbox and Shootbolt Espag Window Lock

Pro Gearbox and Shootbolt Espag Window LockThe Pro shootbolt espagnolette window locking system, man..

£11.58 Ex Tax: £9.65

£11.58 Ex Tax: £9.65

Pro Gearbox Shootbolt Extension Rods (rods only) (pair)

Pro Gearbox Shootbolt Extension Rods (rods only) (pair) The Pro shootbolt espagnolette window l..

£11.48 Ex Tax: £9.57

£11.48 Ex Tax: £9.57

ProLinea Twin Cam Espag - Twin Cam Window Locking System

Twin Cam Window Locking System with 16mm faceplate Options of 20mm & 22mm backset with 8mm ..

£22.22 Ex Tax: £18.52

£22.22 Ex Tax: £18.52

ProLinea Twin Cam Espag For Low Handle Heights

ProLinea Twin Cam Espag For Low Handle HeightsThis multi-point locking system offers versatile secur..

£21.19 Ex Tax: £17.66

£21.19 Ex Tax: £17.66

Replacement Window Keep Striker

The Replacement Window Keep Striker is for use on uPVC windows, timber windows, and aluminium window..

£6.90 Ex Tax: £5.75

£6.90 Ex Tax: £5.75

RetroFit 8-in-1 Window Lock Espagnolette

The RetroFit 8-in-1 Window Lock Espagnolette is an ideal replacement for old style 13mm window locks..

£11.93 Ex Tax: £9.94

£11.93 Ex Tax: £9.94

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