Please pay attention to keep the valve connector tight during installation and ignition!! Power:1x 11260BTU,1 x9383BTU,1 x 5971BTU,1 x 3412BTU Product size:22.83in(L)*19.69in(W) (Exist slight error) Cut-out size: 21.65in(L)*18.5in(W) (Exist slight error) Required depth below surface for installatio:4.5 inch(there is a slight error between 1-2inch, can be ignored).
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