What is proof of ability to hold 300lbs? Has it been certified?

I had a big friend stand on it and pumped it up, and it works great to at least 220 pounds.

How much lift can they do ?

I lift about 300# I recommend it

It's made in china.. if you want opinion from someone that uses these, then you should go with rhino brand . These work decent but the rhino brand outlast these by 10 X

How do these work on opening up locked shelves?

I'm not sure exactly what you're asking, but if you provide support under these, they have a pretty strong lifting capacity I've lifted my front-load washer with them quite easily.

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

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Air Wedge Bag,HTCELLE 3 Piece Commercial Grade Air Wedge Bag Pump Professional Leveling Kit & Alignment Tool Inflatable Air Wedge for a Variety of Jobs,Sizes/Small/Medium/Large.

Product ID: 316294010

💪300 lbs load rating

📏Fits 3/32 inch tight gaps

🎛️Three inflatable sizes

R1029

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Elevate your craft with precision and power — don’t get left behind!

PRECISION FIT - Slim 0.8mm thickness and rounded corners slide effortlessly into tight 3/32 inch gaps.
HEAVY DUTY STRENGTH - Supports up to 300 lbs for professional-grade lifting and leveling.
SOLO PRO EFFICIENCY - One-handed pump operation lets you handle full-size installations solo, saving time and labor costs.
DAMAGE FREE HANDLING - Durable TUP material with dual-side coating protects surfaces from marks and scuffs.
VERSATILE SIZE RANGE - Includes small, medium, and large cushions to tackle any alignment or leveling task.

The HTCELLE 3 Piece Commercial Grade Air Wedge Bag Kit features durable 0.8mm thick TUP material with a 300-pound load capacity. Designed for professional alignment and leveling, its three inflatable sizes fit tight 3/32 inch gaps and protect surfaces from damage. One-handed pump operation enables solo installers to efficiently handle full-size projects, making it an essential tool for contractors and DIY pros alike.

Specifications

ASIN	B088F316V6
Best Sellers Rank	321,668 in DIY & Tools ( See Top 100 in DIY & Tools ) 341 in Crowbars
Brand	HTCELLE
Customer Reviews	4.6 4.6 out of 5 stars (2,493)
Date First Available	10 May 2020
Guaranteed software updates until	unknown
Item Weight	322 g
Item model number	Boc-pp-192
Manufacturer	HTCELLE
Manufacturer part number	Boc-pp-192
Model	3PCS
Package Dimensions	28.09 x 21.49 x 5.31 cm; 322 g

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