82.2 Embedded in Wall2.2.1 ScrewBefore installing VTH, please check screws on accessory bag according to the followingspecifications and install by following this guide.Component Illustration QuantityM3×6 Hex slot pan head tail machinescrews--- galvanizing white 4M3×8 Cross recessed countersunk head tailmachine screws --- galvanizing white 4Chart 2- 2Note:M3x6 or M3x8 either is OK.2.2.2 DimensionBefore you install the device, please make sure you know the dimension of device andselect appropriate installation method. See Figure 2- 4.Figure 2- 4