Pull cords are located within each central space for drawing {TAIL ~ the elongated items} through {HEAD ~ the sleeves} once positioned within a duct 
Pull cords are located within each central space for drawing { TAIL ~ the elongated items } through { HEAD ~ the sleeves } once positioned within a duct
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH