Trusted by thousands of satisfied customers. Low Price. High Quality. Premium products at competitive prices. These National deep brood frames (DN4 – 14″ × 12″) are manufactured from quality pine and supplied as flat-packed, self-assembly frames designed for standard National beehives. They provide a strong, reliable and cost-effective solution for brood rearing and colony development. Flat-packed for convenient storage and transport, these frames allow beekeepers to assemble them using their preferred glue, nails and wax foundation, giving full control over the final setup and durability. Pack Size & Ordering Information. Available in packs of 10, 50 or 100 frames Ideal for new hive builds, replacing worn frames or expanding brood capacity Please select the required quantity from the dropdown menu before ordering. Key Features & Benefits. Each frame includes: 1 × Top bar 2 × Side bars 2 × Bottom bars. Frame Type: National DN4 Deep Brood Frame Size: 14″ × 12″ Material: Pine wood Assembly: Self-assembly required (frames supplied flat-packed) Compatibility: Standard National brood boxes. Supplied as frames only Wax foundation sheets are not included Compatible wired foundation wax sheets for National hives are available separately. Why Choose These National DN4 Deep Brood Frames? Deep brood frames provide additional space for brood development, allowing colonies to expand efficiently during strong seasons. These DN4 14″ × 12″ frames offer durability, easy assembly and full compatibility with National hive equipment, making them a practical choice for beekeepers aiming to support healthy and productive colonies. Actiasbee is part of the wider Actias brand family, focused on providing practical, thoughtfully designed equipment for beekeepers of all levels. From hives and frames to extraction and processing equipment, Actiasbee products are built to be durable, reliable, and designed to support healthy, productive colonies. Orders are dispatched promptly and delivered within the stated timeframe. Tracking information is provided where applicable. We aim to respond as quickly as possible. We pride ourselves on excellent feedback.