Valterra RV Furnace & Water-Heater Bug Screens: Size and Fit Guide

Protecting an RV furnace outlet from nesting insects starts with identifying the original vent shape and appliance model. Valterra offers different fitted stainless-steel mesh covers for rectangular, round and raised-center outlets. Similar-looking screens are not necessarily interchangeable, and the correct fit must still allow the appliance's required combustion and exhaust airflow.

Select the screen by vent type, not just furnace brand

Rectangular furnace facesCompare the broad A10-1300VP, the raised Atwood 8500 A10-1302VP and the deeper Atwood AFMD A10-1305VP. Different profiles must not be treated as universal covers.
Round furnace outletsThe two-screen A10-1301VP, large Suburban DD A10-1303VP and small Atwood round A10-1304VP all serve different vent layouts.
Square shared-appliance screensA10-1322VP is listed by Valterra for select Atwood furnace outlets, certain louvered Suburban water-heater vents and some battery vents, subject to measuring the actual grille.

Seven Valterra screen MPNs and their dimensions

Valterra MPN Shape Listed size Intended vent Package
A10-1300VP Rectangle 4.1 × 7.5 × 1.3 in Selected Coleman, Suburban, Sol-Aire and Hydro Flame exterior furnace vents One screen
A10-1301VP Two round screens Catalog dimensions: 2.8 × 6 × 1.2 in Selected Suburban and Duo-Therm round furnace exhaust outlets Two screens
A10-1302VP Raised-center rectangle 4.5 × 4.88 × 1.3 in Atwood Hydro Flame 8500-series furnace vents described by Valterra as having access doors One screen
A10-1303VP Large round, cup-style 6.15 in diameter × 1.3 in deep Suburban DD-series furnace vent outlets One screen
A10-1304VP Small round 3.6 in diameter × 1.3 in deep Selected Atwood / Hydro Flame round furnace vents One screen
A10-1305VP Deep rectangular 6.85 × 5.1 × 2.16 in Atwood AFMD-model furnace vents One screen
A10-1322VP Raised square 4.5 × 4.5 × 1.3 in Selected Atwood 8525/8531/8535/8940 furnace vents, Suburban louvered water-heater vents and battery vents as specified by Valterra One screen

Dimensions are manufacturer/catalog measurements of the protective screen, not a statement that the screen fits every furnace or water heater with a similar exterior measurement. A10-1301VP is a pair of round screens; its published three-number set should not be interpreted as a single circular diameter.

Airflow and appliance safety: Use a mesh screen only where the furnace or water-heater manufacturer permits it. Do not cover an active exhaust with a solid cap, alter the burner or combustion-air opening, or use a mismatched mesh assembly. Valterra instructs owners to inspect these screens monthly and clean them whenever needed to maintain airflow.

Check these details before installation

  1. Locate the furnace or water-heater make and full model, and compare its exterior grille with the precise screen MPN.
  2. Measure the outlet face and note whether there is an access door, round flue projection, raised cup or louvered opening.
  3. Confirm the appliance manufacturer's instructions allow a screen on that vent design. A screen advertised for one Atwood or Suburban family is not a blanket approval for all models.
  4. Install only with the mounting method and fasteners specified for the selected screen. Keep the mesh clear of hot or moving components.
  5. Inspect monthly, particularly after storage and in insect season. Remove debris and verify the vent is not restricted before using the appliance.

Common questions

Does A10-1302VP replace A10-1305VP? Not by default. Valterra identifies the first for the Atwood Hydro Flame 8500 vent family and the second for AFMD vents; their footprints and depths differ.

Is A10-1304VP the same as the Suburban DD screen? No. A10-1304VP has a listed 3.6-inch diameter, while A10-1303VP is the larger 6.15-inch DD-series design.

Are water-heater and furnace screens interchangeable? Only where the exact screen and appliance model are both identified as compatible. A10-1322VP covers selected applications across multiple vent types; that does not make other furnace screens suitable for water heaters.

Shop Valterra vent screens by exact part number

Choose the matching model below. Product cards use the catalog images attached to the individual NewRVParts listings; check the full listing for the supplied mounting components and live availability.

Related furnace parts and service diagrams

For other furnace components and model-specific service information, see the RV furnace parts diagrams directory, Atwood AFMD30111 parts reference, and Suburban SF-30F illustrated parts guide. These model guides help identify the original appliance; the screen itself remains an exterior accessory.

For installation instructions specific to each Valterra MPN, consult Valterra's official RV Bug Screen instruction sheets.

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