KuztomBoxes - KB-TBP-49-4X8 PORTED - Single Cab Ported Box 49" 95-7867 The NF1 is an inline

The NF1 is an inline and unpowered noise filter with high quality RCA's that gets rid of most RCA related interference noise

High-efficiency horn tweeters from PRIDE HyperTone series delivering loud and clear high-frequency output

Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and midbass

Installs inline with RCA signal paths for fast and simple noise isolation

KuztomBoxes - KB-TBP-49-4X8 PORTED - Single Cab Ported Box 49" 95-7867 The NF1 is an inlineFits: UNIVERSAL SINGLE CAB PORTED BOX Box Dimensions: Length: 49"TOP Width: 5. 5"BOTTOM Width: 8. 5" Height: 13. 5" Port Dimensions: Length: 11" Width: 4. 25" Height: 2" Air Space Per Sub: . 8 CF(4 X8 BOX . 4 CF PER WOOFER ) Box Tuning: 39 HZ Mounting Depth: 6. 5" Wood Type: High Quality MDF MADE IN USA Enclosure Finish: Black Armor Coating (Same Heavy Duty Material That is Use to Paint Truck Beds) All KUZTOMBOXES come with speaker terminals Included.