installed inside the liner

NT4600 is not an original part but

(4) DB36 Diffuser

Lifetime (enclosure)

Heavy Duty 120V Digital Timer for Pumps Up to 1 HP featured installed inside the linerControl Heavy Duty 115V Pumps, Outdoor Lighting, and Fountains Automate your 115 volt equipment today. For example, with this programmable 7 Day Dual Outlet Heavy Duty Digital Timer, you could control your fountain's pump and or the lights. Or you could control both your Aquasweep Muck Blaster De Icer and the Digital Oscillator motor's operation. The seven day timer allows for up to 20 on off settings per day and repeats weekly. It provides the option