RV Glossary
Browse RV and towing terms
Browse RV and towing terms with practical definitions and related concepts used throughout our towing-capacity pages.
A
Aluminum Frame
An aluminum frame is a lightweight structural framework used in RV construction to reduce weight while maintaining strength. It is commonly found in laminated RV designs.
Awning
An awning is a retractable cover mounted to the side of an RV that provides shade and weather protection for the outdoor living area. It is one of the most popular RV exterior features.
C
Caulking
Caulking is applied around RV windows, doors, and seams to seal gaps and help prevent leaks. It is a routine maintenance item that should be inspected regularly.
D
Dual Pane Windows
Dual pane windows use two layers of glass to improve insulation and reduce outside noise inside an RV. They are often preferred for hot, cold, or full-time RV use.
E
Entry Steps
Entry steps are the fold-out or retractable steps that provide access to an RV doorway. Many modern RVs include upgraded step systems for better stability and safety.
EPDM Roof
An EPDM roof is a synthetic rubber roofing membrane used on many RVs for flexibility and weather resistance. It requires regular inspection and maintenance to help prevent leaks.
F
Fiberglass Exterior
A fiberglass exterior is a smooth outer RV surface designed for durability, easier cleaning, and improved aerodynamics. It is common on many modern trailers and motorhomes.
G
Grab Handle
A grab handle is a support handle near the RV entrance that helps users safely enter and exit the unit. It is especially useful for children, older adults, and uneven campsites.
I
Insulation Package
An insulation package includes upgraded materials and design features intended to improve an RV’s temperature control. It is often marketed as a weather package or extended-season package.
L
Laminate Construction
Laminate construction uses bonded layers of materials to create lightweight and rigid RV walls. It is commonly associated with fiberglass-sided RVs and modern trailer designs.
Landing Gear
Landing gear refers to the front support jacks on a fifth wheel that raise, lower, and stabilize the trailer. They are essential for hitching, unhitching, and campsite setup.
Leveling System
A leveling system uses manual or automatic jacks to level an RV at a campsite. Proper leveling helps improve comfort and can support appliance performance.
P
Pass-Through Storage
Pass-through storage is an exterior compartment that runs across part or all of the RV and can be accessed from both sides. It is useful for storing large camping gear and equipment.
Power Awning
A power awning is an electrically operated awning that extends and retracts with a switch or button. It offers added convenience compared to a manual awning.
R
Roof Resealing
Roof resealing is the process of applying fresh sealant to an RV roof and its seams to maintain waterproof protection. It is a key preventive maintenance task for avoiding leaks.
Roof Vent
A roof vent allows heat, moisture, and stale air to escape from the RV interior. It helps improve ventilation and reduce condensation.
S
Sealant
Sealant is used on RV roofs, seams, windows, and trim to help prevent water intrusion. Inspecting and maintaining sealant is one of the most important parts of RV ownership.
Slide Motor
A slide motor powers the movement of an RV slide-out during extension and retraction. It is a critical component in many electric slide systems.
Slide Seal
A slide seal is a flexible seal around an RV slide-out designed to keep water, dust, and debris from entering the RV. Damaged slide seals can lead to leaks and weather issues.
Slide Topper
A slide topper is an awning installed above an RV slide-out to help keep water, leaves, and debris off the top of the slide. It can help protect slide seals and reduce maintenance.
Slide-Out
A slide-out is a movable section of an RV wall that extends outward to increase interior living space when parked. Slide-outs are a common feature in many modern RV floorplans.
Stabilizer Jacks
Stabilizer jacks are supports used to reduce movement in an RV after it is parked. They improve comfort at the campsite but are not intended to lift or level the RV.
Stick and Tin
Stick and tin refers to traditional RV construction that uses a framed wall structure with corrugated aluminum siding. It is often more affordable but heavier than laminated fiberglass construction.
T
Tinted Windows
Tinted windows help reduce heat, glare, and UV exposure inside an RV while adding privacy. They can also help protect interior fabrics and finishes from sun damage.
TPO Roof
A TPO roof is a single-ply roofing material used on many RVs because it is lightweight, durable, and resistant to UV damage. It is a common roofing choice on newer RVs.
U
Underbelly
The underbelly is the protected bottom section of an RV that houses and shields plumbing, wiring, and other components. An enclosed underbelly can improve insulation and weather protection.
V
Vent Fan
A vent fan is a powered fan installed in an RV roof vent to move air in or out of the RV. It improves airflow, helps manage humidity, and supports interior comfort.