How much does this cost to the nearest dollar?

Continental Fan Manufacturing BDD100 Spring Loaded Backdraft Damper for 4 Ducti, N/A
BDD backdraft dampers are available in the spring-loaded and gravity style backdraft dampers. The spring loaded dampers are available in 4, 5, 6, & 8 models with a center pin design and a 10 & 12 center post design. Features Neoprene damper seal minimizes leakage. 20 gauge steel housing, aluminum spring loaded butterfly damper blades. Gasket designed to withstand temperatures from -22 F to 180 F. Requires from 0.04 to 0.08 in. wg pressure to open. Simple installation in any position - entire assembly inserts into duct. Exterior foam gasket assures a tight seal against duct

Price is $38.00

Price: $38.05