Circle 108 on inquiry card This duct liner offers a high level acoustic and thermal resistance. It meets thermal performance requirements of many of the most stringent local and state energy codes, including Title 24 of the California Building Standards Code. An encapsulant edge coating covers fibers and prevents flaring of the insulation at the edges (an important IAQ concern with internal duct linings). The airstream surface is treated with an anti-microbial agent to prevent the growth of fungi and bacteria. Knauf. Circle 109 on inquiry card The Wind Guard air curtain is a fixed-speed, belt-driven unit that produces large volumes of air at low operating sound pressure levels. Primary applications are over doors 14-ft. to 26-ft. in height. It can successfully repel gusts of wind up to 30 mph. Heated and unheated models are available, with heated models available in gas, electric, steam and hot water coil designs. Mars Air Doors.

Meanwhile, the Environment Ministry, which conducted separate research on Feb. 23 and 24, said Tuesday it found that nutrient salts necessary for the growth of seaweed had plunged in quantity to almost undetectable levels almost throughout the inland sea.The ministry also said in a report that quantities of ''''chlorophyll a'''' -- a substance in photo plankton -- in many of the 24 points surveyed in the sea were unusually high. Photo plankton consume nutrient salts.In one area deep inside the bay, the ministry detected 20 micrograms of the substance per liter -- almost matching concentrations found during times of so-called red tides caused by massive outbreaks of photo plankton. A microgram is one-millionth of a gram.

Farmers and ranchers have strong opinions about the equipment and products they operate and use, according to results from the first Successful Fanning magazince Stockmen''s Survey [TM]. The survey asked livestock producers to rate products they like best -- 14 categories in all. The lists in boxes (below and on the following pages) represent the brands with the highest response rate and also include editor''s selections of popular models with pricing, minus options and add-ons.A key finding of the survey goes beyond mere opinion. Many producers cite a piece of equipment as a reason for how they are able to improve their operations. And, the product types they report are across the board -- from the biggest tractor to the smallest type of computer hardware.

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