Easily Installed with Eight Fasteners for Maximum Strength Fasteners Recessed in Base - No Tabs Cross Bar Holds Batteries Securely Meets All NMMA Specifications for Retaining Batteries USCG and ABYC Compliant Battery Tray Dimensions Size Length (In) Width (In) Width (Out) Height 24 10-5/8" 7" 8" 1" 27 12-1/2" 7" 8-1/2" 1" 29/31 13" 7" 8-1/8" 1" OEM/Bulk Product Name Packaged NBH-24S Battery Holder - 24 Series - Stainless Steel Rods NBH-24S-DP NBH-27S Battery Holder - 27 Series - Stainless Steel Rods NBH-27S-DP NBH-31S Battery Holder - 31 Series - Stainless Steel Rods NBH-31S-DP