200 Thread Count Percale Base Platform Valance Sheets Percale Box Pleated Base Platform Valance Sheets in AQUA BLUE From £8.95 Percale Box Pleated Base Platform Valance Sheets in AUBERGINE From £7.95 Box Pleated Valance which fits over the base of the bed Base Platform Valance Divan Valance Available in Single, 4ft Small Double, Double, King, Super King and Emperor Size. With extra long 16" drop. 200 thread count 50% cotton percale 50% polyester The Perfects valance offers a great finishing touch to your bedroom. Combining the unmistakable freshness of cotton with easy-care polyester, this 250 thread count valance is available in pleated or padded. Easy to fit and remove, this valance coordinates perfectly with our range of premium sheet sets. Shop for pleated valance at Bed Bath & Beyond. Buy top selling products like Waterford® Lucida Lace Pleated Valance in Ivory and Madison Park Emily Faux Silk Solid Pleated Window Valance. Pleated Valance Sheet. A valance sheet is a combination of a fitted sheet and a bed valance and is usually made from sheeting fabric so that it has no seams in the sheet section and can be easily laundered. A valance sheet is made in two parts, a sheet that fits over the mattress and a skirt, which covers the sides of the bed down to the floor.