Duplex Key System for Standard Spacer Bar

Duplex key system (back to back 2 Piece System), the duplex key system uses standard spacer bar to create the illusion of individual double glazed units where the manufacturer wants to add a profile to the outside of the glass to create a traditional Georgian effect window.

Duplex Key System

Duplex Centre Keys Ordering Information

Duplex 9.5, 11.5 and 15.5mm Centre Key
Duplex 7.5, 17.5 and 19.5mm Centre Key

Duplex Centre Keys Ordering Information

Duplex 9.5, 11.5 and 15.5mm End Key
Duplex 7.5, 17.5 and 19.5mm End Key