The present invention relates to a support frame and a bottom heater thereof, wherein the support frame comprises a bottom plate, flanges, and embossment elements. The flanges are inclinedly extended from the side edges of the bottom plate. The embossment elements are arranged on the flanges. During a process of stacking at least two support frames, a holding mechanism is formed by the embossment elements of one of the two support frames. The embossment elements of one of the two support frames hold the bottom plate of the other support frame. Preferably, the support frame further comprises cut-out portions arranged on the flanges. During the stacking process, a stable holding mechanism is built by paring embossment elements of one of the two support frames and the cut-out portions of the other of the two support frames. Accordingly, the present invention provides a support frame having a stable-holding mechanism between stacked support frames without compromising the production, transportation, assembly, and functionality of the support frames.
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Mohr, Christian, "Support bottom heater: Embossments for stackability - ID-05632", Technical Disclosure Commons, (December 26, 2021)