Where to buy patio door sealer?

[moose]

Already searched Home Deport, Home Hardware... stores but cannot find the patio door sealer shown in the picture (the various sealers sold in these stores are too wide and cannot be inserted). Does anyone know where to buy this type of sealer? Thank you very much.

 

[Teddy]

Rona??
我曾经买一种，跑了这些店多次，总是觉得不配套，最后发现是自己不理解它的具体结构，其实HoMeDepot 就有。另外，可以考虑不同形式的产品和装法。