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Double Glass Door Top Lock – Top Rail Patch Lock Fitting for Pairs of Frameless Glass Doors, Satin
£22.50 inc. VAT (£18.75 + VAT)
- Double glass door top lock
- Top rail patch lock fitting
- For pairs of frameless glass doors
- Locks at the head of the doors
- Long, slim rail design
- Gasket-lined clamp protects the glass
- Satin finish
- For shopfronts, offices and restaurants
- Free UK delivery
- Expert help on 0121 714 0770
- Order by 1pm, sent same dayMon–Fri · FREE UK delivery on every order
- 30-day returnsOn unused items
- VAT invoiceWith every order
- Secure checkoutCard, Apple Pay, Google Pay
Or call 0121 714 0770
This double glass door top lock is a top rail patch fitting that clamps along the top edge of the glass and provides a locking point at the head for a pair of frameless glass doors. Its long, slim rail design gives a clean, continuous look across the top of the doors.
It is ideal for double glass entrances on shopfronts, offices, restaurants and commercial buildings, and is a low cost replacement when an existing top lock fitting is worn, damaged or missing.
Why choose this double glass door top lock?
- Secures double doors: top locking point for a pair of frameless glass doors
- Clean look: long, slim rail clamps neatly along the top of the glass
- Protects the glass: gasket-lined clamp cushions the glass
- Neat finish: satin finish to match your patch fittings
- Great value: a quick, low cost replacement part
Double glass door top lock specifications
- Type: top rail patch lock fitting for double glass doors
- Position: top of the door, at the head
- Door type: pair of frameless glass swing doors
- Finish: satin
Where does the double glass door top lock go on a glass door?
The double glass door top lock clamps along the top edge of a pair of frameless glass doors and gives them a locking point at the head. It is used on frameless glass shopfronts, office entrances, showrooms and internal glass screens.
It works alongside our glass door centre patch lock, glass door centre strike patch and double glass door stopper, so you can build or repair the whole door from one supplier.
Patch fittings for a complete frameless glass door
A frameless glass door uses several patch fittings that work together. Use this table to check you have every part you need.
| Part | What it does |
| Bottom patch fitting | Clamps the bottom corner of the door and sits on the floor spring or pivot |
| Top patch fitting | Clamps the top corner of the door and connects to the top pivot |
| Top pivot | Fixed above the door – the top of the door turns on it |
| Floor pivot | Floor spindle for doors that do not need to self-close |
| Non digging floor spring | Self-closing, sits on the floor with no digging out |
| Corner transom patch | Joins the overpanel to a fixed side panel, with pivot |
| Overpanel to wall patch | Joins the overpanel to a wall or frame, with pivot |
| Fin patch fitting | Joins the overpanel to a glass fin, with pivot |
| T connector | Overpanel to centre fixed panel, with 2 pivots |
| Patch lock | Locks the door at the top or bottom rail |
| Strike box | The keep the patch lock bolts into |
| Centre patch lock | Locks a pair of doors at the meeting edge |
| Top corner locks | Left and right hand top locks |
| Door stoppers | Stop the door at the closed position |
| Glass clamps | Fix fixed glass panels to walls and to each other |
See all our glass door patch fittings.
How to choose the right double glass door top lock
- Glass thickness: our patch fittings suit 10–12mm toughened safety glass.
- Glass cut-outs: notches and holes must be cut before the glass is toughened, so check your glass matches the fitting.
- Left or right hand: for handed fittings, stand outside the door and check which side the pivot or lock is on.
- Finish: match the satin or polished finish of your other fittings for a neat look.
- Door weight: check the weight of your door against the rating of the fitting and the floor spring or pivot.
Not sure? Send a photo of your door and old fitting and we will confirm the right double glass door top lock before you order.
Fitting tips
Always fit glass door hardware with the gaskets supplied between the metal and the glass, and never over-tighten the fixings, as point loads can crack toughened glass. Check the door is level and swings freely before you finish. Frameless glass doors are heavy, so fitting should be done by a competent glazier or shopfitter. For guidance on glass safety, see the Glass and Glazing Federation.
Looking after your glass door fittings
Wipe stainless fittings with warm soapy water and a soft cloth, and avoid abrasive pads or bleach-based cleaners. Every few months, check the fixings are tight and the door still closes smoothly. Replacing a worn double glass door top lock early protects the glass and the rest of the door.
Delivery, collection and trade orders
Order your double glass door top lock by 1pm Monday to Friday for same-day dispatch, with free UK delivery on every order and a VAT invoice included. You can also collect from our trade counters in Dartford, Kent and Wednesbury, West Midlands, Monday to Saturday 8am–6pm. Glaziers and shopfitters can message us on WhatsApp or call 0121 714 0770 for bulk quotes.
Frequently asked questions
Where does this double glass door top lock fit?
It clamps along the top edge of the glass door, at the head, where the pair of doors lock.
Do I need a separate lock for each door?
This fitting is designed for double glass doors. For single doors or corner locking, see our glass door patch locks.
Will it fit my glass?
Glass must be toughened and pre-drilled or notched to suit patch fittings at the manufacturing stage. If you are unsure, send us a photo of your existing fitting on 0121 714 0770 and we will check it matches.
Why buy from All Fitting Hardware?
- Free UK delivery on every order
- Easy 30-day returns on unused items
- Secure checkout
- Expert help on 0121 714 0770
Browse our full range of Patch Fittings.
