SMFP-110024-inch single, 7½-inch riseView step
Stromberg Carlson Flexco Manual RV Step Mounting and Parts Diagrams
Stromberg Carlson’s Flexco manual RV steps fold beneath the coach and come in single, low-profile single, double, triple and four-step versions. The difference between models is more than the number of treads: the frame mounting holes, platform width and rise also change.
Use this model chart alongside the manufacturer's dimension drawings to compare a replacement with the step currently on your RV. Flexco steps in this range have a 300 lb rated capacity and black steel step assemblies with traction surfaces.
Flexco model and mounting-hole chart
Stromberg Carlson identifies the mounting-hole measurements as X (horizontal spacing) and Y (vertical spacing) in its mounting illustration. Use the actual holes on your existing step frame and RV support structure—not tread width alone—to check the mounting arrangement.
| Manufacturer model | Treads | Platform width | Step rise | Mount X | Mount Y |
|---|---|---|---|---|---|
| SMFP-1100 | Single | 24 in | 7½ in | 23¼ in | 4½ in |
| SMFP-1120 | Single | 20 in | 7½ in | 19 5/16 in | 4½ in |
| SMFP-1200 | Low-profile single | 24 in | 2¾ in | 26½ in | 12½ in |
| SMFP-1220 | Low-profile single | 20 in | 2¾ in | 22½ in | 12½ in |
| SMFP-2100 | Double | 24 in | 8 in | 24⅝ in | 7 in |
| SMFP-2120 | Double | 20 in | 8 in | 20⅝ in | 7 in |
| SMFP-3100 | Triple | 24 in | 8 in | 25½ in | 5½ / 7 in |
| SMFP-3200L | Large-rise triple | 24 in | 9½ in | 25⅜ in | 5½ / 7 in |
| SMFP-4400 | Quad | 24 in | 8 in | 25⅜ in | 5½ / 7 in |
The SMFP-1200 and SMFP-1220 are low-profile single steps with a 2¾-inch rise, unlike the standard 7½-inch-rise single steps. The SMFP-3200L is a large-rise triple step with a 9½-inch rise, not the 8-inch rise of the SMFP-3100.
Manufacturer folding-step and mounting diagrams
These original Stromberg Carlson sheets show the assembled step, frame width, bracket positions and side elevation. Match the drawing for the correct model; dimensions from one sheet should not be applied to another Flexco step.
SMFP-2100 wide double-step drawing
Stromberg Carlson Flexco Manual RV Step Mounting and Parts Diagrams · product photo reference
Part SMFP-2100
Part SMFP-1100
Part SMFP-4400
Stromberg Carlson's mounting-hole dimensions are different across these models. Use the exact drawing for the model being replaced.
Open original manufacturer drawingView SMFP-1100 single-step dimensions
Factory drawing 2: original document
Stromberg Carlson's mounting-hole dimensions are different across these models. Use the exact drawing for the model being replaced.
Open original manufacturer drawingView SMFP-3200L large-rise triple-step dimensions
Factory drawing 3: original document
Stromberg Carlson's mounting-hole dimensions are different across these models. Use the exact drawing for the model being replaced.
Open original manufacturer drawingView SMFP-4400 four-step dimensions
Factory drawing 4: original document
Stromberg Carlson's mounting-hole dimensions are different across these models. Use the exact drawing for the model being replaced.
Open original manufacturer drawingFlexco manual step product photographs
Each photograph links to the matching model listing on NewRVParts. Check the model code in the chart before ordering; a similar-looking step may have different mounting holes or a different rise.
SMFP-120024-inch low-profile singleView step
SMFP-122020-inch low-profile singleView step
SMFP-210024-inch double, 8-inch riseView step
SMFP-212020-inch double, 8-inch riseView step
SMFP-310024-inch triple, 8-inch riseView step
SMFP-440024-inch quad, 8-inch riseView step
Identify the correct step before installation
Measure the original frameMeasure bolt-hole spacing in both directions. Check the frame opening and any mounting tabs or brackets.
Check the riseLarge-rise and standard-rise steps may share tread widths but have different vertical spacing.
Check stowed clearanceVerify the folded assembly will clear skirting, frame members, tanks and other underside equipment.
Check the mounting supportMatch the RV's structural attachment and original hardware. Step frame and floor designs differ by RV.
Stromberg Carlson lists SM-03T as replacement tread tape in its individual Flexco dimension sheets. The tread tape is a separate service part; confirm the tread surface and tape size if replacing only a traction strip.
Installation: The step must be supported by suitable RV framing. Follow the instructions for the exact model and avoid replacing an assembly solely because the new tread is the same width as the old one.
Related RV entry step reference pages
Manufacturer references: Stromberg Carlson mounting-hole chart and individual Flexco dimension drawings above.
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