1037 Roof Drain with 4" Gravel Stop and Adjustable Extension
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1037 Roof Drain with 4 inch Gravel Stop and Adjustable Extension
FUNCTION: Used on roof systems where the insulated membrane assembly method of waterproofing is installed using a liquid membrane. The adjustable extension sleeve permits adjustment from a min of 1 1/4 (32) to a max of 4 (100) easily accommodating 2 3/4" (70) of varying insulation thicknesses. The positive threading allows smooth perimeter movement and circumferential support of the top at any adjusted elevation. A perforated stainless steel extension is supplied to retain the crushed gravel used in flat roof construction.
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