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Holes with a diameter of less than 5 millimeters are typically classified as minor damage. These often result from screw holes, slight impacts, or small cracks. The success rate for repairing minor damage is very high. Professional repair data shows a success rate of over 90% for small holes, and the repair generally does not affect the hot tub's normal operation.
Given identical dimensions (e.g., 150–180 cm) and comparable thickness: •An acrylic bathtub typically weighs between 20 and 35 kg. •A fiberglass bathtub typically weighs between 30 and 50 kg. Clearly, acrylic holds the advantage in terms of weight—a distinction that becomes even more pronounced in high-specification models, such as luxury hot tubs.