Which aspect of a casket provides the structural integrity necessary for its design?

The bridge, also known as the header or cap filler, is crucial for the structural integrity of a casket's design. This component serves to connect and support the casket's two main sections: the cap and the body. By doing so, the bridge plays a vital role in maintaining the overall shape and sturdiness of the casket, ensuring that it can withstand various external pressures and influences. It also provides a smooth and finished appearance where the two sections meet. This structural element is not just about aesthetics; it directly contributes to the casket's durability and functionality, making it a key aspect of the overall design.

In contrast, while the interior lining enhances comfort and appearance, it does not provide structural support. The cap (lid) covers the top of the casket but relies on the bridge for stability. The exterior finish offers protection and aesthetic appeal but does not contribute to the structural integrity necessary for the casket's design.