How and where to use guide

Typical applications and suitability

This heavy-duty tubular latch is engineered for environments where doors experience high-frequency use and significant operational stress. It is particularly suited to commercial premises, industrial facilities, care homes, hospitals, schools, and other public buildings where door hardware must endure constant opening and closing. The FD30/60 and Certifire approval indicates suitability for fire-rated door assemblies, making it appropriate for fire safety applications. The Grade 304 Stainless Steel construction provides excellent corrosion resistance, making it suitable for both internal and external locations, including areas exposed to moisture or salt spray. It is not recommended for lightweight domestic applications where standard latches would be adequate.

• Commercial and industrial buildings with high-traffic doors
• Fire-rated door assemblies (FD30/60 approved)
• Public buildings including hospitals, schools, and care facilities
• Environments requiring corrosion resistance
• Doors requiring frequent, heavy-duty operation

Installation and fitting

The 76mm tubular latch is designed to fit into a cylindrical hole drilled into the edge of the door at the appropriate height, typically 960mm to 1050mm from the floor for standard door installations. The latch body slides into the pre-drilled hole and is secured with fixing screws through the faceplate. Ensure the door edge hole is accurately drilled to 76mm diameter to allow smooth insertion and proper operation. The latch works with standard lever handles or door knobs fitted to the spindle hole. Check that the door frame has a corresponding strike plate fitted to receive the latch bolt. The latch should operate smoothly without binding; if resistance is felt, check that the latch is fully inserted and the faceplate is flush with the door edge.

• Drill 76mm diameter hole into door edge at standard height (960-1050mm)
• Insert latch body into cylindrical hole
• Secure faceplate with fixing screws, ensuring flush fit
• Fit strike plate to door frame to receive latch bolt
• Attach lever handle or door knob to spindle
• Test operation for smooth, binding-free movement

Maintenance and durability

The Grade 304 Stainless Steel construction provides excellent durability and requires minimal maintenance in normal use. Periodically check that the latch bolt operates smoothly and retracts fully when the handle is operated. If the latch becomes stiff or difficult to operate, apply a small amount of silicone-based lubricant to the bolt mechanism; avoid oil-based lubricants which can attract dust and debris. Inspect the faceplate and strike plate fixings annually to ensure they remain tight, particularly in high-traffic areas. The stainless steel finish should be cleaned with a soft cloth and mild detergent; do not use abrasive cleaners or scouring pads which may damage the surface. In corrosive environments, more frequent inspection may be necessary.

• Check bolt operation regularly for smooth retraction
• Apply silicone-based lubricant if stiffness develops
• Inspect fixings annually, particularly in high-traffic areas
• Clean stainless steel with soft cloth and mild detergent
• Avoid abrasive cleaners or scouring pads

Compliance and limitations

This latch is certified under UKCA1121 and CE2812 standards and complies with BS EN 12209:2003, ensuring it meets UK and European safety and performance requirements. The FD30/60 and Certifire approval confirms its suitability for fire-rated door assemblies. However, this latch is a mechanical latch only and does not provide electronic locking or access control; for such applications, an electronic latch system must be specified separately. The latch is designed for use with standard door frames and lever handles or knobs; compatibility with non-standard hardware should be verified before installation. The 76mm size is fixed and cannot be adjusted; ensure correct hole sizing during installation to avoid fitting problems.