Big box home improvement stores have the cord. Look in the area where they sell screen replacement materials. Sizes vary. Measure yours if possible before buying new.
The stuff shrinks in the heat and pulls out of the channel. A screwdriver or a ‘screen roller’ tool can be used to push it back in place.
Once it shrinks a lot, it’s time to replace.
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.