Should be able to snap into place and have strong hold but it doesn't I spend hours trying to keep them in place. Bad quality and it breaks easily.
PETSAFE RESPONSE: We appreciate you sharing your feedback on the Extreme Weather Pet Door™ Cover Kit, Ana. You may find it helpful to know the core covers aren't meant to be a structural part of the pet door. The core covers cover the cut-out or "core" of your people door. If you are having difficulties fitting the core covers to the frame of your pet door, you may wish to use the optional step in Step 4E of the installation guide to help secure the core covers. If you have any questions about installing the core covers or need assistance, please give our Customer Care Center a call at 1-866-738-4379.