etrailer Square Jack TJDDP-20000SP-F - What Is The Size Of The Leg?
Updated 05/02/2025 | Published 04/24/2025 >
Question:
For this TJDDP-20000SP-F, the outer tube is 4 3/8, the inner is 4, what size is the leg? If you buy this jack and need a replacement leg later, is that available? Thanks. Steve
asked by: Steve M
Expert Reply:
Hello Steve, thanks for reaching out. The leg on the etrailer Square Jack # TJDDP-20000SP-F is a 4" tube. You could maybe call is 3-15/16" if you want to get picky lol. I went to our warehouse and took a measurement and a picture for you.
The replacement leg is not a part that is available by itself sadly.
I hope this helps. Please let me know if there is anything else I can do.
Product Page this Question was Asked From
etrailer Square Sidewind Trailer Jack - Foot Release Drop Leg - 13-1/2" Lift - 12,000 lbs
- Trailer Jack
- Car Hauler
- Enclosed Trailer
- 5th Wheel Trailer
- Gooseneck Trailer
- Side-Mount Jacks
- Sidewind Jack
- 10001 lbs or More
- Manual Jack
- 26-1/2 Inch Lift
- Weld-On
- With Rectangle Foot
- etrailer
more information >
Continue Researching
- Shop: etrailer Square Sidewind Trailer Jack - Foot Release Drop Leg - 13-1/2" Lift - 12,000 lbs
- Shop: Firestone Air Tank - 20 Gallon - (6) 1/2 NPT Ports, (1) 1/4 NPT Port
- Q&A: How to Install 12K etrailer Square Direct Weld Jack
- Video: Review of etrailer Trailer Jack - TJDDP-20000SP-F
- Search Results: air tank
- Shop: Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-1/2 - Pre-Greased
- Shop: Square Direct Weld Trailer Jack - Drop Leg w/ Spring - Sidewind - 15" Lift - 12,000 lbs
- Search Results: l68149
- Search Results: l44649
- Search Results: bulldog trailer jack
- Q&A: What is the Diameter of the Firestone Air Tank item # F9277?
- Video: Review of Stillwell Trailer Jack - Hydraulic Trailer Jack - ST84VR
- Video: All About the Square Direct Weld Jack
- Shop: etrailer Electric Trailer Brakes - 10" - Left/Right Hand Assemblies - 3,500 lbs
- Shop: Grease Seal - Double Lip - ID 1.719" / OD 2.565" - for 3,500-lb Axles - Qty 2
- Shop: Replacement Trailer Hub Bearing - L68149
- Search Results: a frame
- Search Results: a~frame
- Video: Hands-On Review with the Big Truck Big RV Trailer Tongue Weight Scale
- Video: Review of etrailer Replacement Power Unit - e25RV
- Video: What to Know About the Square Jack Follow Leg
- Video: Review of etrailer Trailer Jack - Right Leg Square Tube - e23VV
- Q&A: Does RAM Offer a Replacement Foot Lever For The Square Direct Weld Jack # TJDDP-20000SP-F?
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Trailer Wiring Diagrams
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a Class II and a Class III Hitch?


Steve M.
4/30/2025
Jesse, I am traveling and using my phone, so maybe that is why I can't see the picture that you took. So to clarify, are you saying there are only two legs/tubes (an outer 4 3/8", and an inner 4")? Is there a drop leg, too? If there is, what is that size? It can't be the same size as the inner leg/tube, correct? Thanks. Steve M.