How many are in each order?

$32 for 1?! Go to Lowe’s. They are like $9.80 for 1!

How many would I need for a 10x20 shed floor?

The number you need is determined by size of the beam, most small sheds are probably 2 x 6 joists and spacing should not exceed 5'. Are you using 4x4 posts?

Can one be used for mailbox support?

Don’t see why not. Put a 4x4 post in the middle and should be good to go! Make sure surface is level under the block.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Instant Foundation Block Deck Support System for 4" x 4" Posts and 2" Joists

Instant Foundation Block Deck Support System for 4" x 4" Posts and 2" Joists

Product ID: 174657781

Details

Brand
TuffBlock
Item Form
solid
Item dimensions L x W x H
12 x 12 x 3.5
Material
100% Recycled
Shape
Rectangular

♻️Made from 100% recycled polyolefin

⚖️Only 1.5 lbs, 28x lighter than concrete

🏋️‍♂️Supports 1700+ lbs load

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€ 69.88

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Build smarter, not harder — the future of deck foundations is here!

ECO CHIC FOUNDATION - Crafted from 100% recycled materials with a high UV rating for durability and sustainability.
NO DIG NO STRESS INSTALLATION - Build decks just 5.5 inches off the ground—no digging or heavy concrete required.
ULTRA STRONG YET FEATHER LIGHT - Supports heavy loads over 1700 lbs while weighing just 1.5 lbs—deck building made effortless.
VERSATILE FIT FOR ALL PROJECTS - Designed to perfectly accept 2” joists and 4x4 posts for decks, sheds, walkways, and more.
VENTILATED DESIGN FOR LONGEVITY - Innovative underside ventilation prevents moisture buildup, extending your deck’s lifespan.

The TuffBlock Instant Foundation System revolutionizes deck building with lightweight, ultra-strong recycled blocks that support over 1700 lbs each. Designed for easy, no-dig installation, these ventilated blocks fit standard 2” joists and 4x4 posts, making them the eco-friendly, hassle-free alternative to heavy concrete foundations.

Specifications

ASIN	B07YN6HMHM
Best Sellers Rank	#116,422 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #235 in Braces & Joist Hangers
Brand Name	TuffBlock
Customer Reviews	4.4 4.4 out of 5 stars (46)
Grade Rating	Commercial
Item Dimensions	12 x 12 x 3.5 inches
Item Form	solid
Item Shape	Rectangular
Manufacturer	TuffBlock
Material	100% Recycled High Strength Closed Loop Polyolefin
Model Number	TB001602
Number of Items	1
Part Number	TB001602
Unit Count	1.0 Count

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