Match the part number, measurements and connection points that apply to your trailer.
| Opening | Measure the existing roof or wall opening. |
|---|---|
| Flange | Confirm overall and flange dimensions. |
| Operation | Confirm powered, manual or fixed operation. |
| Mount / Power | Verify mounting and electrical requirements. |
Black hardened-plastic battery box kit designed for Group 24 batteries and supplied with a snap-on lid, securing strap, and mounting screws.
| Specification | Detail |
|---|---|
| Part Number / SKU | HM300 |
| Product Type | Battery box kit |
| Battery Group | Group 24 |
| Material | Hardened plastic |
| Color | Black |
| Internal Dimensions | 10-1/2" L x 7-3/16" W x 9-5/8" H |
| External Dimensions | 14" L x 10" W x 10-11/16" H |
| Strap Length | 42 inches |
| Quantity Included | 1 complete kit |
| Category | Details |
|---|---|
| Primary Battery Fit | Made for Group 24 batteries |
| Applications | Trailers, campers, boats, generators, and other battery-equipped applications |
| Fitment Method | Compare the battery dimensions with the listed internal box dimensions before ordering. |
| Installation Space | Confirm the listed external dimensions fit the intended mounting location. |
| Important Note | Verify battery size, available installation space, and strap length before installation. |
| Feature | Buyer Benefit |
|---|---|
| Hardened Plastic Construction | Resistant to battery acid, UV rays, gas, and impacts. |
| Snap-On Lid & Strap | Includes a lid and 42-inch strap for securing the battery box. |
| Built-In Handles | Handles assist with lifting and moving the box. |
| Vented Lid | Two lid vents provide breathing for the enclosed battery area. |
| Marine Standard | Meets U.S. Coast Guard Standard 183.420. |
Important Fitment Note: Verify that the battery fits within the 10-1/2" L x 7-3/16" W x 9-5/8" H internal dimensions and that the intended mounting location accommodates the 14" L x 10" W x 10-11/16" H external dimensions. Confirm the included 42-inch strap is suitable for the installation.
Compatibility: Made for Group 24 batteries. Verify the battery measurements against the listed internal dimensions before ordering.
Application: Suitable for trailers, campers, boats, generators, and other applications that use a compatible battery.
Installation Notes: Confirm the external footprint fits the mounting area and keep the two lid vents unobstructed.
Construction Insight: Hardened plastic provides resistance to battery acid, UV rays, gas, and impacts.
Constructed from hardened plastic that is resistant to battery acid, UV rays, gas, and impacts.
Made for Group 24 batteries with clearly listed internal and external dimensions.
The snap-on lid includes two vents for breathing within the enclosed battery area.
Includes a 42-inch securing strap and four mounting screws.
Built-in handles assist with lifting and moving the battery box.
May be used with compatible batteries in trailers, campers, boats, generators, and other battery-equipped applications.
Meets U.S. Coast Guard Standard 183.420.
| Quantity | Item |
|---|---|
| 1 | Black hardened-plastic battery box |
| 1 | Snap-on lid |
| 1 | 42-inch securing strap |
| 4 | Mounting screws |
Selected from R&P customer feedback for Trailer Vent products and related trailer service.
“I've ordered lots of trailer repair parts from them, always fast service, well packed, and the right parts. I highly recommend.”
“Great customer service, working for many years with them!”
“Would like to say thanks to everyone at R and P Carriages parts were delivered fast and with the very helpful staff, the right parts were sent the first time. Thanks Happy Holiday's.”
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