When I saw this feature, "Build A Custom-Look Window Seat Using Stock Kitchen Cabinets" I fell in love! I've been trying to figure out how to use all the wasted space under three casement windows so a window seat is the perfect solution BUT there's a hot water baseboard heater running smack under that window! Can I still make the dream come true if I raise the units a couple of inches above the heater? If so, what's the best way to deflect the heat from the cases and prevent roasting whatever I store in the units? Cement board?