All styles of doors and windows are now ready-made and are for sale everywhere, so it is only necessary to specify in the contract with the builder the kind and style wanted, unless special designs are desired.

Outside and sliding doors should be one and three-fourths inches thick, and all other doors one and three-eighths inches thick. Material must be thoroughly kiln-dried, and free from knots and sap. Window sash and frames should be fitted snugly; and above all, sash should be hung with cord and pulley where the expense can possibly be borne. Sash should be from one and three-eighths to one and three-fourths inches thick.

If not hung with pulleys, windows should be supplied with convenient locks to hold them at any desired height. The casing and stops about windows should receive great attention, as here is the place that usually admits much cold in winter.