Hilti BX 3-ME 22 Volt Battery Actuated Fastening Tool Nail Gun 1973 This is the square-ish screen

This is the square-ish screen used on the original exhaust vent fans in older trailers

3 and OSHA requirements for low velocity tools     Dimensions (L x W x H) 14

Country of manufacture: China

trademarks

Hilti BX 3-ME 22 Volt Battery Actuated Fastening Tool Nail Gun 1973 This is the square-ish screenPowered by a brushless motor and our standard 22 Volt battery, the BX 3 ME 02 uses patented spring belt technology to perform applications traditionally limited to propellant actuated tools, without the hassle of gas cans or cartridge disposal. Unlike flywheel technology, the spring belt technology does not cause the same wear and tear on the piston resulting in superior fastening quality and a much longer life of the tool. Using build in Bluetooth