Thickening treatment, reasonable ition, suitable for itional connection in the pipe._x000D_ Made of high quality material, environmentally friendly, non-toxic and hard._x000D_ Easy installation, using duct tape or duct clamps to connect air duct adapter._x000D_ Perfectly suited for bathroom, kitchens, apartment, home, office, hotel HVAC system._x000D_ Perfect to connect 150mm to 100mm duct system. / Perfect to connect 200mm to 150mm duct system. / Perfect to connect 110mm to 100mm duct system._x000D_ colour:White_x000D_ Material:plastic_x000D_ size: 150-100mm, upper diameter 97mm, lower diameter 155mm, height 117mm / 200-150mm, upper diameter 147mm, lower diameter 205mm, height 111mm / 110-100mm, upper diameter 98mm, lower diameter 114mm, height 97mm_x000D_ _x000D_ Package Contents:_x000D_ 1 x Pipe Adaptor Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.