These fast-fit MACO MK1 French Casement gearboxes suit the MACO MK1 French Casement extensions which are used on the passive side of a pair of French casement windows.

Key features:

• You will need an MK2 gearbox for the active sash and a MK1 gearbox for the passive sash, as well as two extension arms per casement. See datasheet for a full French casement set-up guide.
• Extension rods when paired with the MK1 gearbox will suit rebate heights between 600-1400 mm
• Small lock case prep to maximise profile strength
• All MACO components come with MACO Silverlook-Evo finish as standard, offering extreme corrosion resistance and unique self-healing, self-lubricating protection against environmental damage and wear.

Dimensions:

• 20mm or 22mm backset available

Guarantees & accreditations:

• Tested to 7.4Kn (more than double the current requirements of BS7950:1997)
• Endurance tested to over 40,000 operations
• Manufactured to ISO9001/2
• Corrosion resistance beyond EN 1670 Grade 5 (up to 600hrs salt spray)