MACO MK1 uPVC Window Lock Shootbolt Gearbox Reverse Action - 20mm

• Versatile & Compatible - available in 20mm and 22mm backsets, fits standard eurogrooves, and works on both left- and right-handed windows thanks to the reverse-action gear.
• Secure & Robust - gearbox connects to shootbolt extensions via a strong serrated fitting, working with mushroom cams for maximum locking security.
• Cost-Effective & Reusable - the gearbox can be used across multiple window sizes; only the croppable shootbolt extensions need replacing.
• Durable Performance - tested to over 40,000 life cycles and withstands 7.4kN load, exceeding BS7950:1997 and PAS 24 standards.
• Corrosion Resistant & Guaranteed - Silverlook-Evo finish provides Grade 5 protection against up to 600 hours of salt spray, ideal for harsh environments, and comes with MACO's 10-year Secure Plus guar

MACO MK1 Shootbolt Gearbox The MACO MK1 Gearbox is the core component of the MACO MK1 Shootbolt Espagnolette window locking system. Available with 20mm and 22mm backsets, it works seamlessly with the system’s croppable extensions, which integrate both shootbolts and mushroom cams for superior security. This design has been rigorously tested to withstand 7.4kN of force and over 40,000 life cycles, far surpassing industry standards such as BS7950:1997 and PAS 24. Engineered for both performance and longevity, the MACO MK1 gearbox features a Silverlook-Evo finish that provides up to 600 hours of salt spray resistance (EN 1670 Grade 5), making it highly resilient in severe weather conditions. Backed by MACO’s 10-year Secure Plus guarantee, which includes up to £1,000 of insurance excess cover, this system provides reliable operation, enhanced security, and peace of mind. Technical Information Gearbox Orientation: Inline Gearbox Type: Reverse action drive gear (left- and right-handed compatible) Faceplate Width: 16mm Eurogroove Compatibility: Standard 12mm and shallower eurogrooves Material: Faceplate: Mild Steel (DIN 1624); Reverse action gears: Sintered steel D30 (DIN 30910); Gearbox components: Zinc diecast (DIN 1743) Coating: Silverlook-Evo – high corrosion resistance, self-healing, salt spray tested up to 600 hours (EN 1670 Grade 5) Performance: Tested to PAS 24 enhanced security requirements, 7.6kN load, 40,000 life cycles; exceeds BS7950:1997 standards Window Compatibility: Outward-opening PVCu casement windows Handle Compatibility: Standard espagnolette handles with 7mm square spindle and 43mm fixing centres Recommended Fixings: 4mm / No.8 countersunk screws (espag to sash), M5 machine screws (handle to espag) Guarantee: MACO Secure Plus 10-year guarantee, including up to £1,000 insurance excess cover