METRIC DESIGN GUIDE
Carnes, Verona, WI, one of the larger manufacturers of air distribution products, regularly
makes round metric sizes (Dick Laughlin, 608-845-6411).
Donco Air Products, Albion, IA, a small fixture manufacturer but a major manufacturer of
light troffer diffusers, can manufacture light troffer, slot, and layin diffusers in round
metric sizes up to 1 500 mm length (Ron Jansen/Marc Vandegrift, Engineering, 515488-
Duralast, New Orleans, LA, can make its primary diffuser product in a 600 by 600 mm
variation (Ron Vinson (distributor), 504-837-2346).
J & J Register, El Paso, TX, can make round metric sizes (Chris Smith, 915-852-9111).
Juniper Industries, Middle Valley, NY, has previously made and can currently produce
metric-size diffusers and grilles (Steve Liebermann, 718-326-2546).
Krueger, Inc., Tucson, AZ, a large manufactu er of grilles and diffusers, has the capability
to manufacture round metric sizes (Steve Bowser, 602-622-7601).
Reliable Metal Products, Geneva, AL, a subsidiary of Hart & Cooley, is a medium-size
manufacturer of air distribution products and can make about 90 percent of its products in
round metric sizes (John Bowers, 205-684-3621).
Rock Island Register, Rock Island, IL, can make its standard product, a 2- by 2-foot
diffuser, in a 600 by 600 mm size (John Howarth, 309-788-5611).
Sommerville Metalcraft, Cranfordsville, IL, can produce grilles and diffusers in round
metric sizes (Paul Moehling, 800-654-3124).
Thermo Kinetics, Greenville, SC, can make its standard grilles and diffusers in round
metric sizes (Terry Rutledge, 803-277-8080).
Titus Products, Richardson, TX, a major manufacturer of air distribution grilles and
products, indicates a number of products currently available in round metric sizes (Dave