div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: OLS FIRE-SMOKE CURTAIN TYPE DAMPER Designed to provide 2- and 4-hour resistance with low air leakage and low resistance to air flowWe take a vety serious view of fire damper as a src=https:reader034fdocumentsusreader034viewer20220422115eb1acfdc1589d222e5ccf87html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: OLS FIRE-SMOKE CURTAIN TYPE DAMPER Designed to provide 2- and 4-hour resistance with low air leakage and low resistance to air flowWe take a vety serious view of fire damper as a src=https:reader034fdocumentsusreader034viewer20220422115eb1acfdc1589d222e5ccf87html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: OLS FIRE-SMOKE CURTAIN TYPE DAMPER Designed to provide 2- and 4-hour resistance with low air leakage and low resistance to air flowWe take a vety serious view of fire damper as a src=https:reader034fdocumentsusreader034viewer20220422115eb1acfdc1589d222e5ccf87html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: OLS FIRE-SMOKE CURTAIN TYPE DAMPER Designed to provide 2- and 4-hour resistance with low air leakage and low resistance to air flowWe take a vety serious view of fire damper as a src=https:reader034fdocumentsusreader034viewer20220422115eb1acfdc1589d222e5ccf87html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: OLS FIRE-SMOKE CURTAIN TYPE DAMPER Designed to provide 2- and 4-hour resistance with low air leakage and low resistance to air flowWe take a vety serious view of fire damper as...