Looking for the best jack posts that fit tight spaces from 2’10” to 4’7″? These adjustable steel posts offer durable support, easy setup, and reliable stability for home repairs or construction projects.
When floors sag or beams weaken, strong support matters most. These jack posts fit tight spaces, from 2’10” to 4’7″, and hold heavy loads. Tiger Brand, Marshall, and Tel-O-Post deliver durable steel and easy adjustments.
Adjustable design means quick setup. Double locks and grooved pins add stability. Corrosion-resistant finishes keep posts lasting years.
Need reliable support for home repairs or construction? These posts are built to last. Pick the right one and work with confidence.
List of Top 4 2 Ft 10 In To 4 Ft 7 In Jack Posts
| Image | Title | Best For | Price |
|---|---|---|---|
![]() |
Tiger Brand Super S Series 2’10-4’7 15GA Jack Post |
This product is perfect for contractors, DIYers, and homeowners needing strong, adjustable support. The 15GA jack post handles heavy loads, from 2’10” to 4’7″, with ease. |
|
![]() |
Marshall JP55 Adjustable Extend-O-Post Jackpost, 15 Ga T X 2 4 Ft 7 in H, Steel Screw, 2′ 10″ |
This product is perfect for homeowners and contractors fixing sagging floors, weak beams, or warping stairways. Its adjustable height, strong steel screw, and corrosion-resistant paint make it a durable, easy-to-use solution for stabilizing structures. |
|
![]() |
Tiger Brand Jack Post JS-55 – Size Range 2’10”-4’7″ (15Ga) |
The Tiger Brand Jack Post JS-55 is perfect for homeowners who need strong and reliable support for their floors, beams, or stairwells. It’s easy to install and built to last, making it ideal for fixing sagging floors or adding extra strength to your home. |
|
![]() |
Tel-O-Post Adjustable Floor Jack Post 15 Gauge – Size Range 2’10”-4’7″ |
The Tel-O-Post Adjustable Floor Jack Post is perfect for anyone needing strong, reliable support. It’s ideal for construction, repairs, or DIY projects where safety and durability matter most. |
Detailed Reviews
Discover the top 4 jack posts for spaces 2’10” to 4’7″, handpicked for strength and reliability. Each one is easy to adjust and built to handle heavy loads, making them perfect for tough jobs. Find the best fit for your needs and get long-lasting support with confidence.
1. Tiger Brand Super S Series 2’10-4’7 15GA Jack Post

The Tiger Brand Super S Series Jack Post is adjustable. It is made of 15-gauge steel and fits spaces from 2’10” to 4’7″.
This jack post holds up to 14,000 lbs when extended. It supports 18,000 lbs at minimum extension. Strong and built for tough jobs.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for contractors, DIYers, and homeowners needing strong, adjustable support. The 15GA jack post handles heavy loads, from 2’10” to 4’7″, with ease.
Ready to Purchase?
2. Marshall JP55 Adjustable Extend-O-Post Jackpost, 15 Ga T X 2 4 Ft 7 in H, Steel Screw, 2′ 10″

The Marshall JP55 Adjustable Extend-O-Post Jackpost is a strong and reliable support solution. It’s made of durable steel and stands 4 feet 7 inches tall. This jackpost is easy to adjust for your needs.
It supports sagging floors, weak beams, and warping stairways. The grooved pin and plain pin add stability. Its red, corrosion-resistant paint keeps it looking good and lasting long.
From the trusted brand Marshall, this jackpost is built to last. It’s a smart choice for home repairs and construction projects. Get reliable support with the Marshall JP55.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for homeowners and contractors fixing sagging floors, weak beams, or warping stairways. Its adjustable height, strong steel screw, and corrosion-resistant paint make it a durable, easy-to-use solution for stabilizing structures.
Ready to Purchase?
3. Tiger Brand Jack Post JS-55 – Size Range 2’10”-4’7″ (15Ga)

Tiger Brand Jack Post JS-55 is a durable, heavy-duty support tool. It’s built from high carbon steel for long-lasting strength.
Adjustable design makes setup quick and simple. It corrects sagging floors and supports beams, stairs, or basements. Double-locked safety ensures stable, secure use.
This jack post works as permanent secondary support. Ideal for heavy-duty repairs and daily use. Sturdy, reliable, and easy to install.
| Pros | Cons |
|---|---|
|
|
Perfect For:
The Tiger Brand Jack Post JS-55 is perfect for homeowners who need strong and reliable support for their floors, beams, or stairwells. It’s easy to install and built to last, making it ideal for fixing sagging floors or adding extra strength to your home.
Ready to Purchase?
4. Tel-O-Post Adjustable Floor Jack Post 15 Gauge – Size Range 2’10”-4’7″

The Tel-O-Post Adjustable Floor Jack Post supports heavy loads. It fits spaces from 2’10” to 4’7″ tall.
It holds 18,000 to 14,000 pounds. The high carbon steel frame resists bending. The powder coat finish fights rust.
Setup takes minutes with simple tools. Double locks keep it stable and safe.
| Pros | Cons |
|---|---|
|
|
Perfect For:
The Tel-O-Post Adjustable Floor Jack Post is perfect for anyone needing strong, reliable support. It’s ideal for construction, repairs, or DIY projects where safety and durability matter most.
Ready to Purchase?
Buying Guide
Strong support fixes sagging floors. Jack posts from Tiger Brand, Marshall, and Tel-O-Post work in tight spaces and hold heavy loads.
- Load Capacity: Picks hold 14,000–18,000 lbs. Strength drops when fully extended. Pick based on weight needs.
- Adjustability: Fits 2’10” to 4’7” spaces. Quick setup for uneven gaps. No custom cuts needed.
- Materials: 15-gauge steel or high-carbon steel. Strong and stiff. Resists bending under pressure.
- Stability Features: Double locks and grooved pins lock in place. No slipping. Safe for long-term use.
- Corrosion Resistance: Powder coat or red paint stops rust. Lasts years in damp basements or garages.
- Ease of Installation: No pro tools needed. Adjust and lock in minutes. Works for DIY or pros.
- Brand Reliability: Tiger Brand, Marshall, and Tel-O-Post are trusted names. Built to last.