If the power is going to be out for a long time, buy dry or block ice to keep the refrigerator as cold as possible. Fifty pounds of dry ice should keep a fully-stocked 18-cubic-feet freezer cold for two days.
Instructions. Measure the width of the window and decide how wide the window treatments will be. Window valances should extend 2 inches beyond the window frame to allow for the support brackets. Being made of wood, box valances weigh more than fabric valances, so consider how they will be attached to the wall.
1. Measure the width of the area you wish to cover and record this as the finished width of the valance. Establish the finished length as the distance from the proposed top of the valance to the required length. Typically, valances are one-fifth of the implied window length.