Check the listing for details. Design Engineering DEI Boom Mat Speaker Baffles Pair 50310 4 Inch Speaker Round. Condition: New. Listed at 12.99 USD. Design Engineering DEI Boom Mat Speaker Baffles Pair 50310 4 Inch Speaker Round Description Boom Mat Speaker Baffles Boom Mat speaker baffles are made from high-tech, closed-cell polyethylene foam which encases the speaker to seal out dirt and moisture, while providing a protective shell. They also maximize speaker performance by isolating the correct frequency responses, damping reverberation in the sheet metal and panel-to-frame resonance.Additional features include:* Conforms easily in tight spaces for a professional installation* Thin material design offers less bulk for a clean, tight installation and a professional finished appearance* Isolates frequency responses and prevents sound from migrating to unfavorable areas in the vehicle, such asdoor panels* Serves as a protective barrier for speaker cone and voice coil against dirt and dust* Acts as a protective guard for exposed speakers (i.e., speaker components visible in trunk area)* Extends speaker lifespan and protects owner's speaker investment SPECIFICS Brand: Design Engineering DEI Manufacturer's Part Number: 50310 Part Type: Speaker Baffles Product Line: Boom Mat Speaker Baffles Part Number: DEI-050310 UPC: 607078503107 Speaker Size: 4 in. Speaker Shape: Round Speaker Baffle Material: Polyethylene foam Length (in.): 6.000 in. Width (in.): 6.000 in. Depth (in.): 3.500 in. Quantity: Sold as a pair.Design Engineering DEI Boom Mat Speaker Baffles Pair 50310 4 Inch Speaker Round Description Boom Mat Speaker Baffles Boom Mat speaker baffles are made from high-tech, closed-cell polyethylene foam which encases the speaker to seal out dirt and moisture, while providing a protective shell. They also maximize speaker performance by isolating the correct frequency responses, damping reverberation in the sheet metal and panel-to-frame resonance.Additional features include:* Conforms easily in tight spaces for a professional installation* Thin material design offers less bulk for a clean, tight installation and a professional finished appearance* Isolates frequency responses and prevents sound from migrating to unfavorable areas in the vehicle, such asdoor panels* Serves as a protective barrier for speaker cone and voice coil against dirt and dust* Acts as a protective guard for exposed speakers (i.e., speaker components visible in trunk area)* Extends speaker lifespan and protects owner's speaker investment SPECIFICS Brand: Design Engineering DEI Manufacturer's Part Number: 50310 Part Type: Speaker Baffles Product Line: Boom Mat Speaker Baffles Part Number: DEI-050310 UPC: 607078503107 Speaker Size: 4 in. Speaker Shape: Round Speaker Baffle Material: Polyethylene foam Length (in.): 6.000 in. Width (in.): 6.000 in. Depth (in.): 3.500 in. Quantity: Sold as a pair.