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Ships within 48 hours · Estimated delivery Nov 14 - Nov 19
Options * MAR - Mounting Angle Ring (sold in pairs - 2 needed
165° replaceable fusible link (#50)
Blades spaced at 2/3"
Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various opening pressures
055 T6 extruded aluminum construction * Fits all Shoemaker commercial products * Controls airflow evenly * Screwdriver operated * Available in even sizes * Mill finish Options * Clips for easy installation * Soft White
Pressure Relief Horizontal Air Up 3520-18X20 past 12 months Options * MAR - Mountingh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various
