Your search for shallow mount subwoofer returned the following:

Prime R2 Series 10" shallow subwoofer with dual 4-ohm voice coils

IN STOCK

5 people say 

• mica-injected polypropylene woofer cone with poly-foam surround
• power range: 100-200 watts RMS (400 watts peak power)
• frequency response: 45-250 Hz

Compact sealed enclosure with one 10" shallow-mount sub

IN STOCK

11 people say 

• 5/8" medium density fiberboard construction
• power handling: 50-200 watts RMS
• frequency response: 20-114 Hz

Sealed truck-style enclosure with one 12" Punch Stage 3 shallow subwoofer

IN STOCK

1 person says 

• sealed enclosure with one Punch Stage 3 shallow dual voice coil woofer
• 1-ohm total impedance
• handles 400 watts RMS

Sealed truck-style enclosure with one 10" Punch Stage 3 shallow subwoofer

IN STOCK

• sealed enclosure with one Punch Stage 3 shallow 10" dual voice coil woofer
• 1-ohm total impedance
• handles 300 watts RMS

Sealed truck-style enclosure with one 8" Punch Stage 3 shallow subwoofer

LOW STOCK

• sealed enclosure with one Punch Stage 3 shallow dual voice coil woofer
• 1-ohm total impedance
• handles 150 watts RMS

Sealed truck-style enclosure with with one 12" Prime subwoofer

LOW STOCK

1 person says 

• sealed truck-style enclosure with one 12" Prime subwoofer
• frequency response 29-250 Hz
• handles 250 watts RMS

Sealed truck-style enclosure with with one 10" Prime subwoofer

IN STOCK

• sealed truck-style enclosure with one 10" Prime subwoofer
• frequency response 38-250 Hz
• handles 200 watts RMS

Custom-fit truck enclosure with shallow-mount 13.5" sub — fits 2007-up Toyota Tundra Crew Max

4 people say 

• black Stealthbox® enclosure fits behind the rear bench
• one 13.5" 13TW5-3 subwoofer
• power handling: 100-600W RMS

Passive in-wall subwoofer with matching amplifier

IN STOCK

• passive in-wall subwoofer with 10" woofer
• includes custom-matched 500-watt amplifier
• frequency response 36-120 Hz

Single down-firing sealed enclosure for 12" shallow sub

LOW STOCK

• 5/8" MDF (medium-density fiberboard) with black carpet covering
• internal volume: 0.50 cubic feet
• dimensions: 20-1/2"W x 6-1/4"H x 13-7/8"D

Single down-firing sealed enclosure for 10" shallow sub

LOW STOCK

• 5/8" MDF (medium-density fiberboard) with black carpet covering
• internal volume: 0.35 cubic feet
• dimensions: 18-5/8"W x 12"H x 5-7/8"D

Single truck-style sealed enclosure for 10" shallow sub

IN STOCK

1 person says 

• 5/8" MDF (medium-density fiberboard) with black carpet covering
• internal volume: 0.35 cubic feet
• dimensions: 24"W x 12"H x 4-3/4"D

Single down-firing sealed enclosure for 8" shallow sub

OUT OF STOCK

1 person says 

• 5/8" MDF (medium-density fiberboard) with black carpet covering
• internal volume: 0.15 cubic feet
• dimensions: 11-3/4"W x 5-1/2"H x 9-1/4"D