combinations of drawers and doors may be included in the base. A corner cabinet can be fitted with revolving shelves to maximize space utilization. The countertop and backsplash are usually one piece and faced with plastic laminate or other impervious covering. To provide workspace, wall cabinets are set about 400 mm (16 in.) above the counter. Cabinets above the stove and sink are usually higher. The finishes and cabinetry installed directly above cooktop burners must be at least 750 mm (30 in.) from the elements or burners. Where the cabinets are protected by non-combustible surfaces or are fitted with a metal hood projecting 125 mm (5 in.) beyond the edge of the cabinets, the distance between them and the burners can be reduced to 600 mm (24 in.). Kitchen cabinet shelves are usually 275 to 300 mm (11 to 12 in.) deep. Wall cabinets may extend to the ceiling or a space may be left above the cabinets. Closets Clothes closets are commonly provided with shelves and a closet rod or metal track. Manufactured storage units may be used in lieu of a site-built closet or may be installed in closets to maximize storage room. Built-in cabinets may also be used in bedrooms. Larger houses may have small rooms (walk-in closets) for clothes storage. Closets on exterior walls should be avoided—the lack of air circulation and presence of clothing and other items act as unintentional insulation, lowering the interior wall temperature and increasing the risk of condensation. A standard interior door (Figure 174), sliding doors, multiple doors or bi-fold doors can be used in pairs or other multiple combinations to provide optimum access to closet space. 174 Storage closets Linen closet with shelves Built-in dresser shelves drawers Clothes closet shelf closet rod finger pull sliding doors rack