OutBack PS4DC DC Enclosure Box Fomally know as the PSDC ETL listed indoor type powdercoated steel enclosure with plenty of conduit knockouts Knockouts for three additional inverter battery breaker and ten 3/4" breakers 500 amp 50 mV DC current shunt standard Battery negative/ground bus bar standard Mounting brackets for an OutBack MX60 and an OutBack MATE Knockouts for battery conduit, MX50 interconnect and stacking another PS4DC For negative or positive ground systems Provisions for two 120mm boxer fans for FX series inverter cooling Knockouts on five surfaces to facilitate conduit and inverter connections Mounting provisions for two DC12-FAN kits (recommended for quad stack configurations) Enclosure Size HxWxD: 18.26" x 11.45" x 8.8" / 46 x 29 x 22 cm Shipping Size HxWxD: 21" x 14" x 12 / 53 x 36 x 31 cm Shipping Weight: 22 lbs / 10 kg