Ellis Manufacturing Company 4x4 Screw Jack - Adjustable Support - Safe Load Capacity (15,000 lbs) - Galvanized Finish

These jacks were used in conjunction with 4x4 posts and 4"x8" beam to temporarily hold up floor joists while we removed a wall and put a beam in place so as to get that open feeling between kitchen and living room. Then on another job they were used in a like manner to support a porch roof while replacing a support post.

Product is spec'd anytime I have work such as this. Superior in my opinion to anything we have available in this area. Interesting job, house deviated off plumb as a result of localized blasting. In middle Tennessee we are quite close to hard pan, ( Nashville Dome, a Churt / Limestone upheaval) . So this is a growing problem. Again, thanks for a great product.

I have used these in the past when I was a member of a FEMA Urban Search and Rescue Team. I bought a pair of these recently because I needed to shore up a roof and remove and rebuild a wall. They worked flawlessly and they were a safe way to accomplish my task. I have complete confidence in the entire Ellis line of products but theses screw jacks are the simplest solution for the majority of my applications.

I purchased 14 - 4x4 screw jacks to help support a 14 x 30 area in a fixer upper / major project home I just purchased. I ran them every 2 to 3 feet on a 12 foot beam with a 3 inch concrete pad under each jack. I am totally pleased with the results. They were very easy to install and adjust to level. It took a disappointing looking room back that had an obvious floor problem back to level. Thanks for a great product.

Personally. I wouldn't use anything else. This gives me full adjustability of the supports that hold my roof line. All the previous 4x4 supports were bowed, or not supports weight at all. This allows me full adjustability. I'm just an avid diy guy. Saves thousands doing it myself.

This jack was very well constructed, and I used the galvanized model for an outdoor use. Making a number of adjustments in a confined space was no problem. Troy was very helpful making sure I had the right jack for my particular need. Item was delivered on time as promised. Their web site is well designed. Customer service response was excellent and timely.

These are no the weak, thin tubes that you'll get from the big hardware store websites. These are heavy gauge steel that you mount onto solid square posts and you can move a mountain with enough of them. I used them @ 32" o.c. and they worked like a dream!

Very easy-to-use jack. I bought four of these to support the main beam in my crawlspace, and they have performed flawlessly for the past several years. Simply put, you insert a length of 4x4 into the jack, secure the jack at the bottom, and turn the jack until tight. After using these heavy-duty jacks, I wouldn’t consider using any other brand of jack if I need to support more beams in the future!

I'm using for of these basic jacks to support an outdoor deck during replacement of a beam. Recommend some good axle grease on the threads to protect them from rust and make adjustment easy. Easy fine tuning of height, and stays put with hex nut. Great product!

The screw jacks work great. The paint was chipped off during shipping. Poorly shipped. Why even paint them to just to throw them into a box unsecured so all the paint can get chipped off during shipping. I spent a lot of money on the screw jacks. I have to repaint them so my investment lasts. I will not buy from Ellis again because of the poor shipping.