Sculpted aluminum speaker isolation stands The new Aperta 300, the next member of the acclaimed Aperta series, takes isolation and sound clarity to a new level. Featuring its signature stylized open design and low profile (3.0 inches), the Aperta 300 offers speakers a low stance while enhancing their clarity and performance. The stand's unique tilt adjustment feature enables the user to dial in the optimum tilt angle, with fine gradation markings provided to match precise angle adjustments on each side.Designed to support larger center channel speakers for home audio use, the Aperta 300 features a solid aluminum frame construction measuring 300 x 200 x 75mm (11 3/4" x 7 7/8" x 3") and support speakers weighing up to 60lbs (27.2kg). Dial-in the optimal tilt angle with up to 6.5 degrees The new Aperta 300 stands feature a unique integrated tilt adjustment to dial-in the optimum tilt angle, with fine gradation marking provided to ensure the precision of the angle adjustments. Hear The Amazing Difference Is ISO-L8R155 the best speaker stand in the world? Hear the amazing difference in isolation and sound clarity with patented ISO-L8R Speaker Stands. Height Chart Height adjustment from the reference plane at a listening distance of 36" & 48" allows for optimized speaker position relative to the listener.