Allparts Deluxe 9 Volt Bottom Mount Battery Compartment
9-Volt Deluxe Battery Compartment, With Access Door, Black, 2-3/16" x 1". Built-in terminals and lead wires. Mounting surface must be at least 1-1/4" x 2-1/2" (31.75mm x 63.50mm) and 1-1/2" (38.10mm) needed.