Final answer:
When installing stacks, cones, the target patch should surpass the flange of the accessory by at least half of the flange's diameter.
Step-by-step explanation:
When installing stacks, cones, the target patch should surpass the flange of the accessory by at least half of the flange's diameter. This ensures proper alignment and allows for adequate sealing. For example, if the flange diameter is 10 inches, the target patch should extend at least 5 inches beyond the flange.