J&J" appears to be a brand name used by several different companies for various bracket types, including general air conditioning support brackets, specific rubber shock absorber mounts, and even automotive compressor brackets.
Specifications
These heavy-duty brackets are designed to support the outdoor condenser unit of a split air conditioner system.
Material: Metal or heavy-duty steel with weatherproof coating.
Construction: Often features a triangular structure for strong support.
Finish: Painted or powder-coated (commonly off-white or grey) for corrosion resistance.
Load Capacity:
Specific models can support up to 150 kg (approx. 330 lbs).
Other models support BTU ratings of 24,000 to 36,000 BTU units.
Dimensions:
One common set of dimensions: 40.6 x 7.6 x 8.9 cm (L x W x H).
Another common size: 550mm x 550mm.