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 19-960003 Slide-Out Supports solve this problem by providing solid support underneath your extended slide-out. They transfer the weight of the slide-out directly to the ground, taking the strain off your extension tubes, motor, and sidewalls.Set of 226"-47"1,400 lbs/pairLifetime Warranty
Push-button quick-release
700 lbs per support
Handle-free = zero damage risk
Hand-adjust and lock
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.
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.
To determine which size you need, measure the distance from the ground to the bottom of your slide-out frame rail 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 frame rail is 36" off the ground, the 19-960003 (26"-47") is your best choice because 36" falls comfortably 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") 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. Ultra-Fab leveling blocks (sold separately) work great for this purpose.
• 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 (19-960003) • Instruction Sheet
★ = This product (19-960003). All three models share the same design, construction, and capacity – only the height range differs.
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 frame rail or extension tube 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.
19-960001: Slide-Out Supports 16"-28" (low trailers) 19-960002: Slide-Out Supports 21"-37" (mid-range) 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 frame rail with U-channel bracket straddling the extension 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!