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https://www.campingworld.com/ap-products-single-bulb-slide-out-seal-wwiper-1-18-x-2-18-x-35%27-149428.html
AP Products Slide-Out Seal Wiper - 35' Long, 1-1/8" x 2-1/8"
This AP Products Multi Purpose Single Bulb Slide Out Seal Weather Stripping comes in black and is sold individually.
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https://www.campingworld.com/protect-all-slide-out-rubber-seal-treatment-18633.html
Slide-Out Rubber Seal, 17 oz.
Slide-Out Rubber Seal, 17 oz. - THETFORD CORP
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