hi Buying Only 1 window Sill 1 3/8  thick 36 " long 7 1/4 wide can mill down to thinner thickness if needed ,,40" with ears, 7 1/4 inch wide,,, can make  wider if needed also  i make custom window sills and wooden door thresholds too.for replacing rotted out ones in the old houses with double hung windows and others. Made from kiln dried # 1 select grade no knots treated wood I also dry these here in shop till moisture comes down to 10 to 12 % moisture so they dont crack or warp comes with 1 coat of exterior val-spar primer and sanded before shipped ready for your paint and install,,,, free estimates just send me your measurements from last picture send me A.B,C,D,E,and F numbers and thickness also    i put pictures of example what these replace i also can help you figure out or tell you how to replace these if you need help ☺  houze wood products point marion pa  thanks john houze   all sills are guaranteed against cracking have a problem with them i'll replace them  ☺ i can make you as many as you need 

I NEED YOUR MEASUREMENTS THE DAY YOU BUY THIS A-B-C-D-E-F LOOK AT LAST PICTURE  THANKS JOHN