Length: 8-1/2" to 9-1/4" (215.9mm - 234.9mm)
Width: 3-3/4" to 4-1/2" (95.2mm - 114.3mm)
Thickness: 1-1/2" (38.1mm)
Briggs & Stratton : 270843, 270843S, 4134
Aftermarket : 1397, 261-1243, 30-099, 30-911, 4100210, 7-02231, 801015, B1SB1397, BAF-109, SB-1397
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Briggs & Stratton : 220700, 251700, 252700, 253700, 255700 and 256700; for 10 and 11 HP vertical engines