Reviewed 13 October 2026. A plaster-in diffuser needs to be coordinated with the ceiling before the opening is cut. The frame, board build-up, finished slot and maintenance access should be shown together on the project detail. This guide sets out the information to confirm before ordering. Installation depth, fixing method and removable parts depend on … Read more
Reviewed 13 October 2026. In a heritage or refurbishment project, start with the existing ceiling and service routes. A standard linear slot diffuser may be suitable, but its dimensions, connection and visible frame need to be checked against the surveyed building. Custom fabrication can resolve geometric constraints. It does not remove the need to confirm … Read more
Reviewed 12 October 2026. CE marking depends on the exact product, its intended use and the legislation that applies. A passive grille should not be treated as a fire damper or an electrical device. Equally, the absence of a harmonised product standard does not, by itself, prove that every possible CE route is unavailable. Start … Read more
Reviewed 12 October 2026. Start with the fire-performance requirement in the project specification, then match it to evidence for the proposed product. The material name, a CE logo or a laboratory’s accreditation mark alone does not establish the fire classification of a finished diffuser. Identify the performance being specified Reaction to fire describes how a … Read more