Roto TSL Twin Cam Security Espag Window Lock

(Choice of 20mm or 22mm backset, and length)

Direct replacement to restore PAS 24 twin-cam security

Twin-cam Security Locking (TSL) espagnolette window lock designed to deliver PAS 24-compliant security for outward-opening windows. Operating via reverse-action 7.7mm locking points, the gearbox drives each pair of opposing cams into the strikers, securing the sash against jemmying and twisting forces. In tandem with suitable striker plates, it also provides integrated night ventilation for secure trickle airflow.

This single-unit lock installs directly into standard and shallow Eurogrooves, with no cropping or extensions required. Available in 20mm and 22mm backsets, the range covers sash rebate sizes from 401mm to 1150mm. The eccentric cams provide ±1mm compression adjustment, allowing tighter sealing in winter and increased ventilation in summer.

Engineered for longevity, the steel body features Roto's Sil Nano surface finish for scratch resistance and Grade 5 corrosion protection (480 hours salt spray in accordance with BS EN 1670). The mechanism is tested to 50,000 operational cycles and is backed by a 10-year functional warranty.

Features & Benefits

• Twin-cam security – mushroom cams lock into strikers from opposing directions
• PAS 24 compliant – tested to resist high-force jemmying and sash separation
• Quick install – no cropping or extensions required
• Versatile sizing – fits sash rebates from 401mm to 1150mm
• Wide compatibility – fits standard 12mm and shallow Eurogrooves
• Seasonal performance – ±1mm cam adjustment optimises sealing year-round
• Corrosion resistance – Grade 5 protection to BS EN 1670 (480 hours salt spray)
• 10-year functional warranty – tested to 50,000 operational cycles

Did you know? Engineered for PAS 24 compliance, Roto TSL’s twin cams lock bidirectionally into two-screw keeps—preventing frame twisting and separation during jemmying attempts