Lab Jack, Rectangular, 12.875" D x 7.625" W, Blue Anodized Finish, with Recessed Area on Top Plate. Laboratory jack designed specifically for use with rectangular hot plate stirrers like our analog, digital and cloud / wifi enabled models. The narrow, space-saving, design offers a compact footprint compared to traditional, larger, square lab jacks. Built for strength and durability, the top and bottom plates are chemical-resistant, anodized aluminum and the lift mechanism is made of stainless steel and aluminum. The recessed area in the top plate measures 6.375 x 11 inches with a depth of 0.098 inches. Excellent Side-To-Side Rigidity and Support. Height Adjustment From 3 to 15 Inches. Top Plate has a Recessed Area That Keeps the Hotplate Safely Centered. Maximum Load: 75 lbs Static Holding Weight. Smaller Footprint Than Square Lab Jacks.