one thing about installations-you never know till you start..i looked on Dacor's site; old oven had cutout req of 27-1/2---new one calls for 27-5/8. that's only 1/8. i would think you could plane down top and bottom of cutout. before i did that though; i would measure everything on site. maybe the original cutout ran proud of spec's or new oven is not 'really'-'exactly' what they claim.[hard to believe but it happens].