N.B. Handy 9003 Yellow Brick Rd Rosedale MD 21237 is one of the leading wholesale supply houses of commercial roofing products HVAC equipment and supplies sheet metal and sheet metal fabricating equipment. Areas Served: N.B. Handy Company has HVAC supply houses throughout the mid-Atlantic and southeastern United States. What Brands Does N.B. Handy Sell? N.B. Handy offers name brand HVAC supplies from Samsung Gibson Honeywell Zone First Glasfoss Lux Braeburn APCO DuroDyne Malco Fieldpiece Bosch Yellow Jacket Klein Diversitech Rectorseal Cambridge Genova JMF Little Giant Nu-Calgon Mars and many others.