Ultra-Fab Products 48-979004 Ultra Stacker Jacks

Purpose built to keep travel trailers, horse trailers, and cargo haulers steady and level so your rig doesn’t wobble like a newborn deer every time someone steps inside. Super tough die cast aluminum delivers serious strength without adding unnecessary weight—because your trailer already carries enough “just in case” gear. A wide height range makes leveling easy across different trailer sizes, campsites, and “creative” parking situations. Includes four stabilizers to lock down all corners of your trailer or RV for maximum stability—no more rocking, swaying, or surprise midnight tilt a whirls. Nesting design saves precious storage space, and the built in handles make setup fast and tool free. (Stabilizing only—these aren’t automotive jack stands, superhero lifts, or anything wild like that.) Product details: Ultra-Fab 48-979004 Stacker Jacks (4 pack). Die-cast aluminum construction for strength and low weight. Adjustable minimum height 11 inches to maximum 17 inches. Item dimensions (each): 12.25 x 6.75 x 6.75 inches. Item weight (per Rainforest spec): 0.01 ounces. Designed for trailers and RVs; load capacity listed as 6000 (per jack). Nesting design for compact storage. Includes limited lifetime warranty per manufacturer.

• COMPACT, STACKABLE, AND EASY TO USE: Nesting design saves precious storage space, and the built in handles make setup fast and tool free. (Stabilizing only—these aren’t automotive jack stands, superhero lifts, or anything wild like that.)
• FULL 4 CORNER COVERAGE: Includes four stabilizers to lock down all corners of your trailer or RV for maximum stability—no more rocking, swaying, or surprise midnight tilt a whirls.
• ADJUSTS FROM 11" TO 17": A wide height range makes leveling easy across different trailer sizes, campsites, and “creative” parking situations.
• 6,000 LB DIE CAST MUSCLE (PER JACK): Super tough die cast aluminum delivers serious strength without adding unnecessary weight—because your trailer already carries enough “just in case” gear.
• ROCK SOLID TRAILER STABILIZATION: Purpose built to keep travel trailers, horse trailers, and cargo haulers steady and level so your rig doesn’t wobble like a newborn deer every time someone steps inside.