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Drop seals are typically activated automatically when the door closes. They can be mechanical or automatic, with the latter often utilizing a spring-loaded mechanism. When the door is shut, the seal drops into place, sealing any gaps that might exist. Some designs may offer manual activation features as well, allowing users to engage or disengage the seal based on specific needs.
fire door drop seal

Once you’ve confirmed that the seal needs to be replaced, it’s time to remove the old one
. Depending on your oven model, the seal may be held in place by adhesive or screws.