Our galvanised window frame brackets boost installation ease and efficiency. The D-21 bracket discretely retains window frames into cavity brickwork.
 
The D-21 Bracket is a reversible lug which clips onto the aluminium extrude nail flange/fin. Small pawls prevent the clip from slipping off allowing the window frame to be positioned into brickwork, and secured to the outer or inner brick layer depending on the orientation of the bracket.
 
The D-21 bracket is intended to be used with aluminium window extrusions which have a nail fin.