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Buyer's Guide To Window Terminology

19 June 2017

Understanding the ins and outs of window furniture terminology is often not the easiest of tasks. From friction hinges to windows restrictors and espagnolette handles, this product area is full of specialist terms and hardware crafted for very particularly applications. At SD Hardware, we believe that navigating through the jargon shouldn't be a baffling experience, so if you're new to buying window hardware, we've put together a guide to getting to know the various parts and pieces needed to dress your window.

Espagnolette Bolts And Handles

A locking device that is placed in front of the window, espag handles are the decorative and functional part of a casement window locking system. Built into the window, they offer security whilst accentuating the appearance of your window frame. The casements themselves have a mechanism that consists of several locking points that provide a secure, sturdy and tight seal on your window. The handles themselves come in a range of classic, contemporary and ornate designs - to find the right fittings to suit you, you can view our full range here.

Cornish Heritage Espag Window Handle in Polished Chrome

Excalibur Locking Systems

A unique and highly secure form of security locking, these mechanisms are designed to work on flush and stormproof timber casement windows. These are much more effective than locking options that simply use a fastener to lock the window shut, giving your home the reliability and security it needs.

Excalibur Gearbox (Flush Windows) 22mm Backset

Friction Hinges

An essential piece to accompany any window, friction hinges are an absolute must-have for offering a clean, smooth closing movement to your window. Made from hardwearing ferritic stainless steel, they are designed for long-lasting application. Installing friction hinges around your house will offer a lot of stability and stop your window from swinging freely.

Yale Friction Hinge


Window Lock Keeps

Some of the most widely used window lock keeps come in the form of Mushroom Keep Night Vent Locks. Designed for use with corresponding espagnolette bolts and locks, these mushroom keeps include two locking positions; one that seals the window shut, and a second night vent lock that allows air to be let in without compromising security.


Window Restrictors

A health and safety essential, these easy to fit restrictors are a neat and practical addition to any window frame. Preventing the window from being opened too far, these hardware accessories are ideal for making your home as safe as possible. Every restrictor stocked is designed to fit the majority of windows without being unsightly or distracting.

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