Identify where the material is failing
Tell the provider whether the issue is along the bottom, sides or top of the opening. Mention whether it tears, hangs loose or leaves a visible gap. Keep your hands away from moving sections and avoid adjusting the door to compensate for the damaged material.
Distinguish replacement from another repair
Ask whether the retainer and surrounding components are in usable condition. A new strip alone may not resolve a damaged mounting area or a door that closes unevenly. The proposed work should identify which condition it is intended to address.
Choose a compatible replacement
Keep the door model available if known and ask the provider to identify the suitable profile. Describe the actual concern rather than requesting the largest available seal. Set expectations around the opening’s assessed condition, without treating routine weather sealing as a flood barrier.
Your questions
Can I choose a seal only by its width?
The attachment profile and the existing door arrangement also matter. Have compatibility established before buying material that may not fit.
Will a new seal fix a crooked closing position?
It should not be used to hide an operating problem. Ask for that condition to be assessed separately from the flexible material.