install electric cooktop

White-on-white GE Appliances 21 in. Electric Compact Cooktop with Coils
Sears item# 02202182000 Mfr. model# JP202DWW
Cutouts:
Min. to Front Edge of Counter: 2-3/4 in.
Depth, Opening: 16-1/8 in.
Width, Opening: 20-1/8 in.
Clearance, Left Wall: 2 in.
Clearance, Right Wall: 2 in.
Clearance, above Cooktop: 30 in. min.
Dimensions:
Weight, Shipping (Approx.): 18 lbs.
Depth, Overall: 16-5/8 in.
Maximum Width: 21-1/4 in.