All that we are looking for is the visible glass size both width and drop.
For this we we recommend that measurements are taken in various places along the width and drop of the window glazing and the smallest of these measurements used as the order size.Then make a note of whether or not the perimeter seal/gasket (usually black in colour) that grasps the glass protrudes from the window frame extrusion over the glass and is visible from the side - this is a 'YES' on the order selection drop down.Where the seal is in line, hidden behind the window frame extrusion or doesn't exist at all (generally wood, square aluminium and composite frames) then 'NO' is the drop down choice when placing your order.Based on this YES/NO input we will make the necessary adjustments when manufacturing to enable a comfortable fit.
