This Seachoice Battery Tray reliably holds a Group 29 or Group 31 battery, and it has a strong strap with a stainless steel buckle to securely hold the heaviest batteries. The strong poly strap has a buckle made of 316 stainless steel. This compact tray has recessed mounts and no tabs. It meets all NMMA requirements. It measures 13-3/16 In. L x 7-5/8 In. W x 1-9/32 In. H. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.