Present your corporate stationery and document branding with this premium clamshell binder box mockup, combining a rigid lidded storage box with an internal ring binder mechanism. This type of presentation system is commonly used for legal documents, architectural proposals, luxury brand guidelines, and high-end client deliverables. Insert your cover sheet and box lid design via smart objects in Photoshop to create a polished, professional result. Includes 5 PSD files with overhead, angled, close-up, open flat, and elevated compositions.