Going from the original glass size to a thicker option will I have to do any adjusting to make yours fit properly?

No, our SHIELDS® product line has the SHIELDS® Advantage you get the form fit, and function of OEM glass at every thickness. We take the extra step, so your window fits without any special additions on your end. Just fit any of our windows the same way you would fit your glass! *Please note: due to how some windows are produced, some 1/2″ doors do need LONGER bolts for hardware, such as Case New Holland L & C series doors. If you have questions regarding this detail, please give us a call.