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We specialise on finding most double glazing related products but especially Upvc door locks and bolts, any make and model. If you’re looking for a specific model and even if we don't have it, we have the connections to find it for you. We have direct contact with most upvc door lock and bolt manufacturers and have the buying power to get products at discounted rates, we then pass some of that discount to you, the customer.

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Euro Lock Door Cylinders / Door Barrels 35/50 Euro Lock Door Cylinders / Door Barrels 35/50
5 out of 5 Stars!
Thanks for my door barrel fitted without any problems, job well done. 12 out
SI Siegenia Tilt Lock SI Siegenia Tilt Lock
5 out of 5 Stars!
Steven, Just to say how impressed I was with the service. The person I spoke to
Roto Shootbolt Keep Roto Shootbolt Keep
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I have been searching for one of these for about Two Hours on internet and are s
Upvc Flat Door Panel Inserts Upvc Flat Door Panel Inserts
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Panel & cat flap in situ. Training in progress. We are delighted, not so sur

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SI Siegenia Tilt and Turn Window Lock Fixed Height Handle

SI Siegenia Tilt and Turn Window Lock Fixed Height Handle
Click to enlarge
Price: £13.98  (£11.65 Exc.VAT)
Availability: In Stock
Model: KF3 SI TBT 125190 1709
Manufacturer: SI SIEGENIA
Average Rating: Not Rated

Available Options:
Fixed Handle Height:

This is a SI Siegenia fixed height handle replacement tilt and turn drive window lock mechanism for tilt and turn upvc windows an easy replacement part for all types of tilt and turn window gearing with a similar drive gear.

These SI Siegenia tilt and turn drive gear mechanism's replace the old yellow coloured SI Siegenia drive gear mechanism's.

This SI Siegenia tilt and turn gearbox/mechanism has a 15mm backset comes in a fixed handle height of either 125mm from the bottom of the sash rebate or 190mm from the bottom of the sash rebate, to indentify the correct tilt and turn gearbox size you require you will notice markings stamped on the tilt and turn gearbox mechanism or measure from the bottom rebate to the centre of the gearbox or spindle hole, as seen on the product image above.


We also supply full tilt and turn gearing sets if the problem is more than just the drive gear mechanism or the other components that make up the tilt and turn kit see additional images.


The SI Siegenia tilt and turn window kit comprises of the SI Siegenia drive gear mechanism which the tilt and turn handle operates. The main part of the SI Siegenia tilt and turn kit is the gearbox/mechanism which operates all the other components of the SI Siegenia tilt and turn kit such as the top and bottom drive corners. The top corner engages in a locking keep/striker at the top/side of the window, the bottom corner engages in the bottom/side keep as well as the tilt keep/stricker at the bottom of the window. The drive gear mechnism also operated the scissor stay mechanism which operates the tilt action and the backbolt mechanism which locks into the keep/striker on the hinge side of the tilt and turn window. The SI Siegenia tilt and turn bottom extension piece is also required when the tilt and turn is over 1000mm in width.

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Siegenia Low Handle Drive Gear Lock Top
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Siegenia Low Handle Drive Gear Lock Side
Click to enlarge