For many years. Sinclair Graphic Design has provided design and digital-printing services for indoor banners. The nylon banners, which come in a standard size, are used for a variety of purposes, including trade shows, sporting events, and other promotional activities. Three years ago, the company introduced a second printing and production service for outdoor banners that has become increasingly popular. The outdoor banners are a more complex product than the indoor banners, requiring weatherproof vinyl materials and a different printing process to improve the visibility of the text and graphics content. Moreover, outdoor banners are printed in smaller production runs because of less frequent orders, the setup of the printing equipment takes longer, and, since higher durability is needed to withstand the elements, more quality inspections are needed. Under the traditional costing approach, overhead costs are assigned to the products on the basis of direct labour-hours. Despite the introduction of the new outdoor banners, profits have declined steadily over the past three years, Management is beginning to believe that the company's costing system may be at fault. Unit costs for materials and labour for the two products follow. Direct materials Direct labour ($19 per hour) Indoor banners Outdoor banners $32.60 19 $ 57 $14.50 Management estimates that the company will incur $1,920,000 in overhead costs during the current year and that 16,000 indoor banners and 3,200 outdoor banners will be produced and sold