21" x 17" (535mm x 435mm) Elliptical Manway - SS316/Silicone
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
21" x 17" (535mm x 435mm) Elliptical Manway - SS316/SiliconeThis 21" x 17" Elliptical Manway is constructed of stainless steel (SS316) and silicone, providing optimal strength and durability. The elliptical shape ensures a secure seal without putting excess stress on the manway gasket. Install this manway to access or seal tanks quickly and effectively. Product Details : 21" x 17" (535mm x 435mm) Elliptical Manway SS316 Silicone Part No: 3150003622S Type: Elliptical Manway Size: 535mm x 435mm Size: 21" x 17" H
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4.6 ★★★★★
Based on 791 reviews
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Product Reviews
★★★★★ 3
Cool Pillowcases
Color: Gray, Size: Queen (U.S. Standard), Set name: Stretchy and Soft
These pillow cases are silky soft and cool to the touch. They don’t stay as cool as I would like, however, so I find myself moving around on the pillow to find a cool spot or flipping the pillow over. I have washed them several times and the coolness seems to be diminishing. Still, it’s better than a regular cotton pillow case. The zipper is needed and helps keep the material on the pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 20, 2025
★★★★★ 5
By far the best cooling pillow case I’ve bought highly recommend
Color: Blue, Size: Standard, Set name: Silky
Highly recommend best cooling pillow case I’ve bought very soft and comfortable seems to be made from good material as well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 5
Actually cooling and comfortable.
Color: Royal Blue, Size: King
Incredible cases. Soft, super comfortable and actually cooling as claimed. Highly recommended. Love these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Cool
Color: Pink, Size: Standard
Cooling pillowcases work well, don’t wake up sweaty anymore. Very happy with them. Love the material, comfort and softness!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
★★★★★ 5
COOL Pillowcases Worth Buying
Color: Champagne, Size: Queen
I bought these to try out, and I was shocked to find they worked out better than my silk pillowcases. I have atopic dermatitis, and I need a pillowcase that doesn't irritate my skin. I also am having hot flashes and need something cool on my face. These pillowcases are perfect for both my conditions. I plan to buy more in different colors. My sons and husband also like it since they are always hot.
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Reviewed in the United States on May 30, 2026
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