Hayward Check Valve, 4 in, Single, Y True Union, PVC, Socket x Socket - YC20400SU Capacity-600 C-fold or 800 multi-fold towels or 1 The hooks are positioned so

The hooks are positioned so that they are 9-3/4 inches apart from one another

The spring at the top of baseplate locks seat into upright position until released by pulling the top of seat away from wall

Features: Automatic dectection of blower direction

In the design

The unit comes with all of the necessary hardware for mounting

Hayward Check Valve, 4 in, Single, Y True Union, PVC, Socket x Socket - YC20400SU Capacity-600 C-fold or 800 multi-fold towels or 1 The hooks are positioned soItem Check Valves: Check Valve; Flow Design: Single; Mechanism and Body Design: Y True Union; Body Material Valves: PVC; Pipe or Tube Size Check Valves: 4 in; Connection Type Check Valves: Socket x Socket; Cracking Pressure Check Valves: 1 psi; Mounting Orientation Check Valves: Horizontal, Vertical; Seal Material Check Valves: FPM; Max. Temp. Valves: 140 Degrees F; Min. Temp. Valves: 40 Degrees F; Max. Water Pressure Valves: 150 psi @ 70 Degrees F;