There are a number of Quick-Sling® accessories that will adapt your bracket to different installations. The QSAC1000 and QSAC1100 steel beam adapters are made of aluminum and able to hold up to 250 lb each. Each QSAC1000, 1100 is slotted to receive 3/8 in threaded rod or C-clamps for easy mounting. the QSAC2000 and QSAC2100 wood adapters are made of steel and are 12 in L and 2 in W each are able to hold up to 200 lb. All necessary hardware is included. Diversitech WeatherShield™ Snow and Rain Roof Cover, For Use With: 31.5 to 41.5 in x 6 to 14 in Mini-Split Units, Domestic