Every time you extend your RV's slide-out, gravity goes to work. That heavy room extension is cantilevered from the side of your RV, supported only by its slide mechanism and extension tubes. Over time, without support, slide-outs begin to sag – and that sagging leads to seal failures, water leaks, wall stress, and eventually expensive mechanical repairs.
The Ultra-Fab 19-960001 Slide-Out Supports solve this problem by providing solid support underneath your extended slide-out. They transfer the weight directly to the ground, taking the strain off your extension tubes, motor, and sidewalls. The 16"-28" range is the shortest in the Ultra-Fab lineup – built specifically for low-profile travel trailers, pop-up campers, and any RV where the slide-out frame sits close to the ground.Set of 216"-28"1,400 lbs/pairLifetime Warranty
Push-button quick-release
700 lbs per support
Handle-free = zero damage risk
Starts at just 16" height
The Ultra-Fab slide-out support is a telescoping steel post with a U-channel bracket on top that cradles your slide-out's extension tubes or frame rails. Here's how to use them:
That's it – no wrenches, no cranking, no struggling with lever handles. The push-button design makes the Ultra-Fab the fastest slide-out support to set up and take down.
This is the most common ordering mistake. These supports cradle the extension tubes or frame rails underneath your slide-out – not the bottom edge of the slide-out room itself. The extension tubes typically hang 4"-8" below the floor of the slide-out room. Correct: Measure from the ground to the bottom of the extension tubes/rails that push the slide-out in and out. Incorrect: Measuring from the ground to the bottom edge of the slide-out room floor. If you measure to the room floor instead of the tubes, you'll likely order supports that are too tall. When in doubt, measure to the lowest structural member under the slide-out.
Without support, extended slide-outs are fighting gravity every day you're parked. This leads to: • Sagging extension tubes – bending and misalignment • Seal failures – gaps let in rain, bugs, and cold air • Motor/actuator strain – harder to retract over time • Wall and ceiling cracks – stress on the RV structure • Floor separation – slide-out floors pulling away from walls Slide-out mechanism repairs can easily run $1,000-$5,000+. A set of supports is cheap insurance.
Other slide-out supports use lever handles or crank mechanisms that make it easy to overtighten – which can actually lift and damage your slide-out or push water into seals. The Ultra-Fab's handle-free push-button design makes overtightening physically impossible. You simply push the button, slide the tube up until it's snug, and twist the knob to lock. The support holds the slide-out in place without lifting it.
The 19-960001 is specifically designed for rigs with low ground clearance under the slide-out. Common applications include:
If your extension tubes are higher than 28" off the ground, you'll need the 19-960002 (21"-37") or 19-960003 (26"-47") instead.
To determine which size you need, measure the distance from the ground to the bottom of your slide-out's extension tubes or frame rails when the slide-out is fully extended and your RV is on level ground. Choose the model where your measurement falls in the MIDDLE of the adjustment range (not at the extreme ends). Example: If your extension tubes are 22" off the ground, the 19-960001 (16"-28") is your best choice because 22" falls right in the middle of the range. If you regularly park on uneven or soft ground, having your measurement in the middle of the range gives you room to adjust up or down.
For best results, position one support near each end of the slide-out – approximately 6-12 inches from the outer corners. The U-channel bracket should straddle the slide-out's extension tube or structural frame member. The bracket rests against the frame and holds it secure without clamping.
Inside Width: 4-3/4" (4.75") Outside Width: 5" Height: 1-3/8" Front to Back Depth: 2-1/2" (2.5") The U-channel bracket fits over most standard RV slide-out extension tubes and frame members. If your frame rail is wider than 4.75", these supports may not fit properly.
For maximum stability, place your slide-out supports on firm, level ground. If you're parked on soft dirt, grass, or gravel, place a leveling block, paver stone, or piece of plywood under each support to prevent sinking. This is especially important with the shorter 16"-28" model, since shorter supports have less room for height adjustment if they start sinking.
• These supports are for static support only – they do NOT lift loads • Never use as jacks to raise the RV or slide-out • Always remove supports BEFORE retracting slide-out • Do not exceed 700 lbs per individual support / 1,400 lbs per pair • Supports should be snug, not tight – do not attempt to push the slide-out upward
• 2 × Ultra-Fab Slide-Out Supports (19-960001) • Instruction Sheet
★ = This product (19-960001). All three models share the same design, construction, and capacity – only the height range differs. Need a taller size? See the 19-960002 (21"-37") or 19-960003 (26"-47").
1. Park your RV on level ground 2. Extend the slide-out fully 3. Measure from the ground to the bottom of the slide-out extension tubes or frame rails (NOT the bottom edge of the slide-out room – the tubes hang several inches lower) 4. Choose the model where your measurement falls in the middle of the range Not sure? Call us – we can help you figure out the right size.
19-960002: Slide-Out Supports 21"-37" (most travel trailers) 19-960003: Slide-Out Supports 26"-47" (fifth wheels, tall RVs) Leveling Blocks: Place under supports on soft ground Wheel Chocks: Always chock wheels before deploying slide-outs
Ultra-Fab Products 22412 Innovation Dr. Elkhart, Indiana 46514 USA Phone: 574-294-7571 Email: [email protected] Website: ultra-fab.com Making the RV Experience Better Since 1958
Setup: 1. Extend slide-out fully 2. Position support under slide-out extension tubes/frame rails (not the room floor) with U-channel bracket straddling the tube 3. Press quick-release button and slide inner tube up to the frame 4. Twist knob for fine adjustment until snug (not tight) 5. Repeat with second support on opposite end Takedown: 1. Twist knob to loosen 2. Press quick-release button and slide inner tube down 3. Remove supports from under slide-out 4. THEN retract slide-out ⚠️ ALWAYS remove supports before retracting slide-out!