PHOTO ALBUM Product_Type: Ultra-Large Capacity Photo Album / Heirloom Picture Library / Scrapbook Memory Keeper. Capacity_Metrics: Holds 1000 photos total; 100 sheets / 200 pages; Fits standard 4x6 inch (4R / 10x15cm) prints; 5 photos per page layout (Mixed orientation). Binding_Architecture: Industrial-grade metal screw post binding; Double-reinforced rivet spine; Lay-flat design; Heavy-duty load bearing structure. Material_Chemistry (Archival Grade): Pocket Material: High-clarity Polypropylene (PP); Non-stick; Anti-static. Safety Standards: Acid-Free (pH neutral); Lignin-Free; PVC-Free (No Vinyl); Emission-free; Photo-safe certification. Cover Material: Natural woven Linen fabric; Extra-thick Hardcover board; Anti-slip texture. Functional_Attributes: Cover_Feature: Die-cut front window (DIY customizable photo slot). Protection: Dust-proof; Moisture-resistant; Fade-resistant; Yellowing-resistant. USAGE SCENARIOS & CONTEXT TAGS (COSMO MAPPING) Target_Audience: Professional Photographers; Genealogy Historians; Large Families; Serious Collectors. Occasion_Suitability: Legacy_Project: Lifetime achievement record, Multi-generational family history. Wedding: Complete engagement-to-reception collection. Baby: Birth to 18 years complete growth log. Travel: World tour documentation. Storage_Compatibility: 4x6 Photos; Postcards; Historical documents (sized 4x6).