Architectural Tubular Latch – Electro Brass / Satin Nickel (78mm Case / 57mm Backset)

A heavy duty architectural pattern tubular latch designed for high-use internal doors in domestic and commercial environments.. It features a heavy duty spring mechanism, allowing it to be used with sprung or unsprung door handles for added flexibility on site.. With a 78mm case and 57mm backset, it suits many standard internal door setups where a robust, trade-grade latch is required.. The Electro Brass / Satin Nickel finish combination is ideal when matching mixed ironmongery finishes.. Key Features. Heavy duty architectural tubular latch for high-use domestic and commercial internal doors.. Heavy duty spring mechanism – suitable for use with sprung or unsprung door furniture.. 78mm case with 57mm backset – a popular size for many internal door installations.. Easily reversible latchbolt by turning the live latch/bolt – suitable for left or right hand doors.. Fixings supplied to suit electro brass and satin nickel furniture.. Bolt-through facility for lever handles with through-fixing screws.. Complete with dust box and fixing screws.. Suitable for 30 & 60 minute fire doors (when installed as part of a suitable tested door set).. Corrosion rating 1 – recommended for clean, dry, low-humidity internal environments.. Typical Applications. High-traffic internal doors in offices, corridors and commercial premises.. Domestic internal doors where a more robust, architectural pattern latch is preferred.. New-build and fit-out projects requiring a heavy duty latch compatible with sprung or unsprung handles.. Replacement of existing 78/57 architectural tubular latches.. Specifications. Latch type. Heavy duty architectural tubular latch. Product code. 675815P. Size. 78mm case / 57mm backset. Backset. 57mm. Lock case depth. 78mm. Lock case size (H × D). 22.5 × 78mm. Lock case width. 15mm. Faceplate size (H × W). 60 × 25mm. Faceplate type. Square. Keep size (H × W). 65 × 25mm. Finish. Electro Brass / Satin Nickel. Material. Steel. Corrosion rating. 1 – Clean, dry & low humidity environments. Fire rating. 30 & 60 minutes. Standard. BS EN 12209:2003. Recommended screw size. 4.0 × 25mm (8 × 1"). Supplied with. Latch, dust box, fixing screws. Pack type. TIMbag. Pack quantity. 1 Each