Hello Sam; we don't have a way of knowing what seals are on your 2018 Crossroads Cruiser Aire 29SI. If it doesn't have bulb seals I'm sure that is how they intended for it to be from the factory. To find the right replacement seals you need to measure what you have and see how they're mounted. For example, the Rubber Wiper Seal for RV Slide Outs # SR97ZR you looked at measures 2-1/2" wide x 11/16" deep with a push on installation for 1/8" edges.
If you can send me the measurements and... view full answer...
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