Dsb8225L 85Mm Electro Brass Extra Long Security Door Bolt
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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Description
Reinforce Your Timber Doors with Extra Long Concealed Strength
External timber doors face continuous pressure from changing weather, heavy daily usage, and opportunistic security risks. Standard mortice locks provide dependable day to day latching, yet older frames and solid wooden doors often require supplemental reinforcement at critical leverage points. When standard bolts lack the reach to anchor firmly past deep door mouldings or wide frame rebates, vulnerabilities emerge that can leave properties exposed.
The Dsb8225L 85Mm Electro Brass Extra Long Security Door Bolt resolves these common physical security challenges by offering an extended body designed to seat deep inside timber door stiles. Built for mortice installation, this bolt disappears cleanly into the edge of the door leaf, preserving clean lines while creating a rigid barrier against forced entry. It functions as an essential layer of perimeter defence for front entrances, rear utility doors, and secluded side passages.
Finished in an attractive electro brass coating, the visible faceplate and escutcheon complement traditional brass ironmongery throughout your home. Operated internally via a dedicated splined security key, it eliminates external keyholes and keeps opportunist intruders guessing. With its extended 85mm length, property owners achieve greater peace of mind knowing the bolt extends well into the frame rebate, providing robust resistance against jimmying and leverage attacks.
Step by Step Installation and Security Pipeline
Stage 1 Position and Frame Assessment
Begin by selecting ideal mounting locations near the top and bottom corners of your timber door. Proper positioning distributes leverage forces evenly across the entire frame. Ensure the door stile has sufficient depth to accommodate the extended 85mm body without encroaching upon existing mortice lockcases or decorative glazing rebates.
Stage 2 Mortice Preparation
Drill a precise, level mortice hole into the edge of the door leaf using the appropriate wood drill bit. Next, mark the face of the door where the key access hole must align. Taking time to drill straight ensures the operating key engages smoothly with the internal splines without binding during routine operation.
Stage 3 Bolt Housing Alignment
Recess the rectangular forend flush into the door edge with a sharp wood chisel. Secure the bolt body tightly using quality wood screws. Check that the steel bolt shoots freely out from the front plate without rubbing, allowing the mechanism to move easily whenever the security key turns.
Stage 4 Strike Plate and Escutcheon Commissioning
Align the brass strike plate with the timber door jamb, morticing it into position to receive the extended throw. Fit the internal escutcheon plate over the keyhole on the room side. Test the mechanism multiple times while the door remains open, then confirm a snug, rattle free close.
Key Security Benefits for Domestic Properties
Investing in secondary physical security provides visible deterrents and mechanical obstacles against unauthorised access. The Dsb8225L 85Mm Electro Brass Extra Long Security Door Bolt offers several distinct advantages for residential properties, outbuildings, and commercial premises alike.
- Concealed Structural Strength Because the bolt body sits morticed inside the door structure, potential intruders cannot access, lever, or tamper with the mechanism from the outside.
- Extra Long Reach The generous 85mm body length provides exceptional stability within wide door stiles and ensures the bolt throw anchors securely into the door jamb.
- Durable Electro Brass Finish Designed to blend gracefully with existing brass door handles, letterplates, and cylinder pulls, offering long lasting resistance against tarnish and wear.
- Independent Key Operation Controlled via a splined security key from the inside, preventing children from opening doors unsupervised and eliminating accidental latching.
- Universal Application Equally effective when fitted horizontally across single doors or vertically on pairs of inward or outward opening French casement doors.
Detailed Specifications
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Product Model | Dsb8225L | Dedicated reference code for easy component reordering and technical inquiries. |
| Overall Body Length | 85mm | Extended length ensures reliable penetration into thicker frames and robust timber stiles. |
| Installation Method | Morticed Core | Installed directly into the door edge to maintain an unobtrusive, clean exterior appearance. |
| Finish and Plating | Electro Brass | Polished brass appearance providing uniform aesthetics alongside traditional domestic ironmongery. |
| Door Material Suitability | Timber and Hardwood | Ideal for solid timber entrance doors, French doors, wooden casements, and side access gates. |
| Key Operation Details | Splined Star Key Drive | Keys supplied separately. Allows multiple bolts across a single property to run on identical keys. |
Professional Fitting and Maintenance Guidance
For best performance, installing security bolts in pairs is widely recommended by insurance guidelines and crime prevention officers. Fitting one bolt roughly 150mm from the top of the door and a second bolt 150mm from the bottom creates an even distribution of physical resistance across the door frame. This prevents intruders from flexing the door corners away from the weatherstripping with crowbars or screwdrivers.
Because the Dsb8225L 85Mm Electro Brass Extra Long Security Door Bolt uses separate operating keys, you can purchase as many keys as your household needs while retaining a clean, uniform look. Keep an operating key conveniently located within the room away from direct reach of letterplates or windows to maintain strict home security. Ensure household members know the key location for rapid exit during an emergency.
Maintenance for this security bolt is straightforward. Periodically wipe the electro brass forend and escutcheon with a dry microfibre cloth to remove household dust and moisture. Apply a light drop of light machine oil or silicone spray directly into the splined keyway once a year to ensure the internal rack mechanism continues sliding effortlessly for decades to come.
Need Advice on Choosing Door Security Hardware?
Our team of architectural ironmongery specialists is ready to help you choose the correct locks, security bolts, and matching accessories for your building project.
Contact Our TeamSpecification
| Manufacturer | Carlisle Brass |
|---|

