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Lowell CP4

Lowell CP4

Lowell CP4
Item# CP4

Product Description


Backbox #CP4

The recessed enclosure for use with a 4 inch driver and screw-mount grille features an extended flange, making it ideal for new construction where the flange protects the opening from plaster, poured concrete or sheetrock. It can also be used in existing construction when installed in suspended tile ceilings, in which case a tile bridge or channel rails are recommended.


• Material:  Welded unitized 22-gauge steel

• Finish:  black

• Diameter:  6.31 in.

• Depth:  4.00 in.

• Volume:   0.072 cu.ft.

• Acoustical Treatment:  Undercoated

• Combination knockouts

• For Grille Type:  Screw-mount

• Flange Type:  Extended lip


• Made in the U.S.A.

• Certified U.S. steel



The recessed backbox for 4 inch speakers shall be Lowell Model No. CP4, which shall be 22-gauge steel undercoated to eliminate acoustic and mechanical resonance. It shall have a diameter of 6.21 in. and depth of 4 in. It shall feature four 1/2–3/4 in. compound knockouts for conduit and shall be finished in black powder epoxy. It shall have an extended flange. The unit shall be made in the U.S.A. with certified U.S. steel.