Unlike large, assembled cabinets, a “flat-pack” cabinet poses no difficulty negotiating stairs, doorways, or corners. The compact, stackable boxes can be safely stored out of harm’s way and assembled when ready, unlike preassembled cabinets, which take up considerable space and are at risk of damage if you’re not immediately ready to install them. Lower costs and shorter lead times are further enticements to assemble your own cabinets. According to Kitchen & Bath Business (www.kbbonline.com), consumers spent $453.8 million on flat-pack, or RTA (ready-to-assemble), cabinets last year. It’s safe to assume that the majority of those cabinets were sold to DIY homeowners at the national giant home centers. The RTA cabinets sold at those outlets generally represent a barely acceptable, entry-level product,