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Ships within 48 hours · Estimated delivery Jun 15 - Jun 20
For Your Every Summer RSVP, with Code: SUMMER15
Description
GROCO Backing Block f/3/4" 1" Seacocks [BB-1]Backing Block for 3 4" & 1" Seacocks Features: Each size fits multiple seacock sizes Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange Rigid 1 2" thickness provides secure installation but is flexible enough to conform to minor hull curvature Will not swell or absorb moisture Made from an environmentally friendly PVC foam specially formulated for marine applications Specifications:
![GROCO Backing Block f/3/4" 1" Seacocks [BB-1] GROCO Backing Block f/3/4" 1" Seacocks [BB-1]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/72847XL.jpg?v=1643825532)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 1033 reviews
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Product Reviews
★★★★★ 5
incredible mattress topper
Color: Green Bamboo(2300gsm), Size: Queen
incredible product, little to no smell out of the box. super thick and comfortable!!! great product for the price, will buy this again if i need another 😊
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Great topper
Color: Green Bamboo(2300gsm), Size: Queen, Color: Green Bamboo(2300gsm), Size: Queen
Soft, plush, thick and supportive. Material feels breathable. Comes air tight sealed
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Very Comfortable
Color: Green Bamboo(2300gsm), Size: Queen
Soft, comfortable, and fits perfectly on my bed. It adds extra cushioning and makes sleeping more enjoyable. Very happy with this purchase.
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Reviewed in the United States on May 29, 2026
★★★★★ 3
Mattress Topper
Color: Green Bamboo(2300gsm), Size: Queen
So far I haven’t really got to get a feel of it. I will say it came smelling very strongly. I’ve had it now for 3 days & it still has a smell. I let it sit out for 24 hours, with the window opened but it still has an odd scent & once I put it on my bed it’s still smelling strong. It’s kind of hard to focus on my comfort when the smell is very odd & foul but aside from that. The reviews are on point in regards to its softness.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
This is beyond awesome!
Color: Green Bamboo(2300gsm), Size: Queen
I have Airbnb properties and I have bought all sorts of bed toppers. Nothing that I have ever bought has been THIS perfect! Anything with polyester is going to fail you. This one is exactly what I was hoping for which is ONLY shredded memory foam that will last and give you what you want for a cloud like experience!! I just got delivery of this one and unpacked it! It is above and beyond anything I could hope for! It is 100% shredded memory foam through and through, very nice and thick!!
It's extremely well made and well packaged. I am totally thrilled with this bed topper! No more experimenting with my purchases anymore.. and sending them back when it's nothing like. I hope. This one is EVERYTHING! YOU HAVE GOT TO GET THIS AND YOU WON'T BE SORRY!
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Reviewed in the United States on May 19, 2026
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