(2) Rockford Fosgate P1S4-15 Punch 15" 1000w Car Subwoofers + Sub Box Enclosure Package Includes: (2) Rockford Fosgate 15" Subwoofers. (1) Rockville 15" Ported/Vented Sub Enclosure. 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal). 20 Feet of 14 AWG Blue Speaker Wire. 4 Spade Terminals. Features for Rockford Fosgate Subs: Rockford Fosgate P1S4-15 Punch 15" Subwoofer. Size: 15 inches . Peak Power: 500 Watts. RMS Power: 250 Watts . Impedance: 4-Ohm . Custom 10-AWG nickel plated push terminals . Extended pole piece and bumped vented backplate. High-temp voice coil with spun-laced Nomex re-inforcement collar . Kevlar fiber reinforced paper cone . Linear spider with embedded 16 AWG tinsel leads . Protective PVC textured magnet cover. Soft touch ABS trim ring with optional grille. StampCast basket with integrated spider venting. Cutout Diameter: 13.85 inches / (351.8 mm). Mounting Depth: 6.98 inches / (177.2 mm). Voice Coil Diameter 2.0 inches / (5.16cm) . Magnet Weight: 60 oz / 1.70 kg . Speaker Connector: Dual 10 AWG compression. Woofer Displacement: 0.191 cu.ft / (5.4 Liters). Shipping Weight: 16.3 Lbs / (7.39 kg) . Fs(Hz): 23. Re(Ohms): 3.60. Le(mH): 3.1 . Qms: 3.20. Qes: 0.62 . Qts: 0.52. Vas(Liters): 191.5. Sd(cm2): 876 . SPL(dB @ 1w/1m): 87.5 . Xmax(mm): 9.4 . Sealed Enclosure . Vb: 1.58 cu.ft. F3: 42.4 Hz. Qtc: 1.06. Height: 18 inches. Width: 21 inches. Depth: 10 inches. Speaker Cutout:13.85 inches. Speaker Depth: 6.98 inches. Vd: 0.191 cu.ft. Vented Enclosure . Vb: 2.66 cu.ft. Fb: 34.4 Hz. F3: 34.5 Hz. Height: 18 inches. Width: 28 inches. Depth: 12 inches. Np: 1 port. Dp: 4 inches diameter. Lp: 10.8 inches long. Rockville RDVB15 Dual 15" 2.41 Cu. Ft. Ported/Vented Subwoofer Enclosure . Center Divider Separates Each Chamber For Increased Sound Quality. 3/4" USA Heavy Duty MDF Construction. Machine precision cut mounting holes. Top of the line Glue for extra durable adhesion. Designed, tested, and engineered to work with most of todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Tuning frequency: 41Hz.