installed or cause to be installed the restrictor plate 10 for example the message could be from the u s e p a it is to be noted that other shapes sizes and locations for the badge can be implemented as illustrated in fig1 a second restrictor plate 82 is positioned on the right side of the other first restrictor plate 10 depending on the width of the inlet 12 on the right side of the basin grate 36 the second restrictor plate 82 may be shorter longer or the same length as the first restrictor plate 10 as indicated above an example of a longer restrictor plate 82 is restrictor plate 67 illustrated in fig3 it should be appreciated from the above discussion that the shape of the restrictor plates are symmetrically designed this symmetry provides advantages discussed below the second restrictor plate 82 is positioned forward of the first restrictor plate 10 and is substantially flush with the inlet 12 this is because the second restrictor plate 82 does not extend over the grate 36 the aggregate length of the first and second restrictor plates 10 82 are intentionally less than the width of the inlet 12 this enables the two restrictor plates 10 82 to be connected by a splice plate 84 providing end to end restricted coverage of the inlet 12 the splice plate 84 is formed from the same material as the restrictor plate 10 as illustrated in fig4 the splice plate 84 has the same height as the restrictor plate 10 the splice.