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CAPHONT Adjustable House Floor Jacks, 8-Piece Set, 11–16 in Range1 / 7
Product guide

CAPHONT Adjustable House Floor Jacks, 8-Piece Set, 11–16 in Range

Piece: CAPHONT Adjustable House Floor Jacks are a set of screw-adjustable supports listed with an 11–16-inch height range and a 5,000 lb load-capacity claim. The listing describes use for floor joists, beams, decks and other structural support, but says they are not a substitute for a professional vehicle jack or safety stand.

At a glance

  • The central threaded rod adjusts the support height, and the listing says to set the height before loading because adjustment may be difficult once loaded.
  • A spanner and glove are listed among the included components.
  • The listing describes use for floor leveling, joists, beams, decks, porches and auxiliary RV step support.
Price
$39.99Save 20%

Reference price: $49.99

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

  • The stated 11–16-inch range suits support points that fall within that height window.
  • An eight-piece set is presented for supporting larger areas or multiple projects.
  • A wrench and glove are listed in the package contents.

Cons

  • The stated height range is limited to 11–16 inches, so it will not suit support points outside that span.

Technical specifications

9 specifications
Identity
BrandCAPHONT
ModelAdjustable House Floor Jacks
Dimensions and installation
Dimensions listed4 x 4 x 16 inches
Weight listed9.28 kg
Height range11 inches to 16 inches (approximately 28 cm to 40.6 cm)
Capacity and compatibility
Load capacity listed5000 lb
Vehicle type listedRV
Materials and appearance
Material listedAlloy Steel
ColorBlack

What to know before buying

  • The manufacturer says to set the desired height before loading, as raising the jack after loading may be difficult. On gravel or slightly uneven ground, it recommends a hard steel plate or wooden board beneath the base and prohibits bricks or fragile materials. The listing also says these are auxiliary support only for RV use, not a substitute for a professional vehicle jack or safety stand.

What’s in the box

Included
  • 6 adjustable house floor jacks
  • 1 glove
  • 1 wrench

Who is it for?

A good fit for

  • DIYers supporting floor joists, beams, decks or porch structures at heights within the listed range.
  • RV owners seeking auxiliary support for steps, rather than a vehicle-lifting jack or safety stand.

Less suited to

  • Buyers needing supports shorter than 11 inches or taller than 16 inches.
  • Vehicle lifting or primary RV safety support.
CAPHONT Adjustable House Floor Jacks, 8-Piece Set, 11–16 in Range · photo 2
Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 6 ratings
  • 5 stars39%39%
  • 4 stars48%48%
  • 3 stars13%13%
  • 2 stars0%0%
  • 1 star0%0%

Aggregate ratings lean positive, with most ratings in the four- or five-star categories, but the overall picture is limited by the small number of ratings and includes some three-star feedback. The figures do not explain what customers liked or disliked. Buyers should judge fit against the listed 11–16-inch range and treat the 5,000 lb capacity as a manufacturer claim, not customer-verified performance.

Frequently asked questions

What height range does the listing give?

It lists adjustment from 11 inches to 16 inches, approximately 28 cm to 40.6 cm.

Can these be used to lift an RV?

The listing says they are not a substitute for a professional vehicle jack or safety stand and should be used only as auxiliary support in emergency situations.

Should the height be adjusted under load?

The manufacturer recommends setting the desired height before loading because the strut may be difficult to adjust after loading.

What does the listing say to place under the base on gravel or uneven ground?

It recommends a hard steel plate or wooden board. It specifically says not to use bricks or fragile materials.

CAPHONT Adjustable House Floor Jacks, 8-Piece Set, 11–16 in Range · photo 3
Additional product photo 3

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