Calumet Heavy Duty Support Platform For Tripod, Laptop, Macbook, Projector, monitor, Notebook, Computer, While on Location or In The Studio. While in the studio or on location, you can conveniently store a monitor, laptop, projector , or i-Visor Case on the 14 x 10.1 x 1.3 (36 x 26 x 3.2cm) Calumet Tripod Support Platform. This unit features one tripod support platform with 1/4"-20 and 3/8"- 16 reversible mount. It weighs only 1.1kg (2.4 lbs) and holds up to 20kg (44lbs).