Find the right RV plumbing roof-vent cap or powered exhaust assembly without confusing three different designs: passive replacement caps, wind-assisted Cyclone vents and solar-powered fan vents. These fittings exhaust the RV's holding-tank plumbing vent; they are not refrigerator combustion vents or 14 × 14-inch roof fans.
The Ultra-Fab 53-945001 installation diagram (PDF) shows the solar panel, fan airflow and roof flange. Its 150 mm dimension is the maximum roof opening shown in that illustration, not a universal plumbing-pipe size. Check the original vent opening and pipe separately.
Use the Camco ventilation catalog for 40595 white and 40597 black Cyclone variants, and the Ultra-Fab 53-945001 product sheet for its solar-driven operation.
Vertical pipe that allows an RV holding tank to vent through the roof. Measure the pipe's outside diameter and projection before selecting a cap or kit.
Fixes the vent assembly to the roof. A cap-only replacement does not repair cracked flange plastic, defective screws or a failed roof seal.
Camco 40034 is a replacement cap, 40033 is a complete kit and 40595/40597 use a wind-assisted draft design.
Ultra-Fab 53-945001 uses its solar panel to drive a fan in sunlight. Do not assume night-time operation or an electrical connection.
Reference 1 · Wind-assisted vent cap
Wind-driven draft design for an RV holding-tank plumbing vent. Listed for up to a 2-inch vent pipe; verify actual outside diameter and existing installation.
View partReference 2 · Wind-assisted vent cap
Black version of the Camco Cyclone family. Confirm pipe interface, roof clearance and assembly condition; this is not a solar-powered fan.
View partReference 3 · Complete passive vent kit
Complete roof plumbing vent, cap, mounting hardware and putty tape. Camco specifies 1 to 2⅜-inch outside-diameter vent pipes; it is not a cap-only kit.
View partReference 4 · Cap only
Replacement cap for the corresponding Replace-All roof-vent style. This is not the complete 40033 vent/flange kit; inspect the original cap attachment.
View partReference 5 · Solar-powered active vent
Ultra-Fab identifies this as a solar-powered vent fan, not a plain passive cap. Its dedicated instruction sheet details flange sealing, roof clearance and safe installation.
View partThe 40033 Replace-All kit contains a vent assembly, cap, fasteners and putty tape, listed for 1–2⅜-inch outside-diameter pipe. 40034 is a replacement cap only; check the existing retaining mechanism.
The Camco 40595/40597 vent heads rely on wind for their draft effect. The Ultra-Fab 53-945001 is a solar-powered fan, with its own flange and installation requirements. These are not universal cross-brand conversions.
JR Products also lists mushroom-style roof vents 02-29115 (black) and 02-29125 (white) with a screw-on cap. See JR Products' original illustrated component listing. Select replacement parts by their full manufacturer numbers and the original vent configuration.
Ultra-Fab warns that solvents including xylene, toluene, MEK and acetone can damage the plastic flange. Use a roof- and plastic-compatible sealant, and seal the screw heads and flange perimeter according to the installation instructions. Do not block plumbing vents, paint the solar panel, or confuse waste-tank ventilation with refrigerator combustion exhaust.
For compatible tape and fastener kits, see the roof vent installation kits reference; for a complete roof-seal layer guide, see roof flange and termination sealing.
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