Lippert Solid Step 733931 review: stable entry, unforgiving measurements
Research-based Lippert Solid Step 733931 review with a four-number doorway fit card, model-conflict warning and floor-installation checks.
The Lippert Solid Step 733931 is a strong upgrade for the right low-entry towable. Its ground-supported legs remove much of the bounce associated with hanging fold-out stairs, and the 13-inch top tread gives you a more forgiving landing at the doorway.[1][3] The catch is that "26-inch step" is not enough information to buy it safely.
This exact part is a two-tread Solid Step 3.0 for a doorway measuring 25 to 28.9 inches frame to frame and a ground-to-threshold height of 22 to 28 inches.[2][3] You also need at least 3/8 inch between the threshold and the bottoms of both doors.[1][2] Miss any one of those measurements and the assembly may not fit or the doors may not close.
This is a research-based review. RVCamping.info did not buy, install or physically test the steps. As an Amazon Associate, RVCamping.info may earn from qualifying purchases. The reviewed listing is ASIN B07MSYX9DN. Check the model and package on Amazon, but trust the part number over the marketplace headline: the listing must identify Lippert 733931, the 26-inch Double, not a triple or quad assembly.[1][6]
The fit card decides this purchase
Four numbers tell you whether 733931 belongs on the shortlist:
| Check | Lippert 733931 requirement | What to measure |
|---|---|---|
| Door frame width | 25 to 28.9 inches | Inside frame to inside frame |
| Ground to threshold | 22 to 28 inches | Parked, leveled trailer to entry threshold |
| Door clearance | At least 3/8 inch | Threshold to bottom of entry door and screen door |
| Assembly weight | 49 pounds | Your ability to control it during installation and daily stowing |
Lippert publishes the first three fit limits and lists the assembly at 49 pounds.[1][2] The manual calls for one or two people depending on the task, which is a useful signal for anyone expecting a light, one-handed retrofit.[2] The steps fold into the doorway after installation, and this version has no lift-assist mechanism.[1][2]
Here is how the card works on a hypothetical trailer. A 27.5-inch doorway leaves 1.4 inches before the upper width limit. A 25.5-inch threshold height sits 2.5 inches below the maximum. A 1/2-inch door gap clears the minimum by only 1/8 inch. All three measurements pass, but the small door-gap margin makes a dry fit essential before drilling. Those numbers are an example, not a fit claim for any production trailer.
The model identity deserves the same care. Lippert's current page and July 2024 manual both define 733931 as the 26-inch Premium Double.[1][2] The Amazon page indexed during this review used "Quad Step" in its headline while the product information identified model 733931 and described a double stair assembly.[6] That internal conflict is exactly why the ASIN alone is not enough. Confirm the part number on the product page, carton and step identification label before installation.
It earns its space when stability matters
Once the measurements work, the design has a clear advantage. Each leg reaches the ground independently in one-inch increments, while the wide top tread gives you more room at the awkward point where you turn through the doorway.[2][3] The manual rates the assembly for 400 pounds.[2] This is particularly appealing when the original cantilevered steps make the trailer shake or when a deeper first landing would help a person move more deliberately.
An independent Love Your RV installation report described the ground-supported steps as more house-like and found the pilot-hole installation straightforward. That sample was supplied free by Lippert, so it is useful installation context rather than an independent durability test.[5] Camping World's technician guide agrees on the basic fit process: measure the jamb and floor height, identify the floor construction, dry-fit the hinge plate, then set the transport latches so they do not scrape the frame.[4]
The tradeoff follows the same design. Dirt and rainwater on the treads come inside when the assembly folds into the doorway. The steps also need room to swing down, which can be awkward in a tight storage lane or next to another vehicle. Buyers who frequently stop in narrow roadside spaces may prefer stairs that remain outside and retract under the trailer, even if those steps have more bounce.
Installation is easy only after the floor is identified
The manual separates wood and foam-laminate floors. A wood subfloor at least 1/2 inch thick can use the prescribed wood-screw method. A thin wood skin over a foam-laminated core needs the supplied steel backer plate and through-bolts.[2] If the floor construction is uncertain, Lippert says to check with the trailer manufacturer or use the supported backer-plate method.[2]
That is the point where a casual DIY job can turn into structural work.[2] The assembly must sit level and firmly on the threshold, the mounting plate needs sound backing, and the transport lock must be adjusted before it is forced closed.[2] Lippert instructs the installer to shake the stored assembly to simulate road vibration and check that the latch flanges do not scrape the door frame.[2] Camping World's walkthrough follows the same sequence and notes that floor identification may require access from below.[4]
The legs need attention after installation too.[2] Set them only after the trailer is leveled and support both feet on firm ground. The one-inch adjustment steps may still require a pad on uneven terrain so the stair remains level without one leg hanging free. Before departure, clean the treads, fold the unit fully inside and verify that the transport lock is engaged.[2]
Verdict
The 733931 is a good match for a low-entry travel trailer with a 25-to-28.9-inch doorway, a 22-to-28-inch threshold height, enough clearance beneath both doors and a floor that can support the hinge plate.[1][2] In that narrow fit window, it provides a stable 400-pound-rated stair with a deep top landing and individually adjustable feet.[2][3]
Skip this exact part if the trailer needs three or four treads, the screen door cannot clear the hinge plate, the floor construction is unknown, or you routinely need to deploy the stairs in a tight parking lane. Measure the actual trailer, then match the carton to part 733931. That simple fit card is more reliable than a marketplace title and more useful than the generic promise of a "26-inch" RV step.
Sources
- Lippert Solid Step 3.0 Premium 26-inch Double, SKU 733931 (accessed October 31, 2026)
- Lippert SolidStep 3.0 Premium Step installation and owner manual, revised July 17, 2024 (accessed October 31, 2026)
- Lippert Solid Step fit and specification sheet (accessed October 31, 2026)
- Camping World Lippert Solid Step installation guide (accessed October 31, 2026)
- Love Your RV Solid Step installation report (accessed October 31, 2026)
- Amazon US listing for ASIN B07MSYX9DN (accessed October 31, 2026)
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