18 Gauge Inline Watertight ATC Fuse Holder Email Part #: ATFH18C Quantity Price ea. 1 + $6.35 3 + $6.03 10 + $5.08 Sale Price! 5.72 Back to: ATC Fuse Holders Ask a question about this product 16 Gauge Inline Watertight ATC Fuse Holder Description Inline Watertight ATO/ATC Fuse Holder - 18 Gauge - Inline fuse holder for ATO/ATC fuses. Watertight body and cover keep your fuse away from the elements. Available in different wire sizes from 18 gauge to 10 gauge, all have 12 inch wire loop lead.