Mars 79085 Economy Furnace Mounting Block

Mars 79085 Economy Furnace Mounting Block

Condition: New.

The Mars 79085 Economy Furnace Mounting Block is a durable thermoplastic riser designed to elevate furnaces by 2 inches, protecting units from moisture and promoting better airflow beneath the furnace cabinet. These mounting blocks are essential in basement or garage installations where standing water or ground contact could lead to corrosion or premature system failure. The unit also helps reduce noise and vibration transmission to the floor structure.
Ideal for use in new installations, replacements, or retrofits, it’s engineered to handle the weight and thermal cycling of residential HVAC equipment without warping or collapsing.

Specifications
Brand: Mars®
Model: 79085
UPC: 685744790853
Material: Heavy-duty thermoplastic
Lift Height: 2 inches
Weight Capacity: Supports standard residential furnace loads (up to approx. 400 lbs per set, when properly distributed)
Dimensions: Approx. 2″ H x 5″ L x 3″ W (per block)
Color: Black
Water Resistance: Non-absorbent, corrosion-proof

Features
Elevates furnace 2 inches above floor level
Protects against water intrusion and floor moisture damage
Non-conductive and vibration-reducing material
Can be used in pairs or more to support multiple points on the furnace base
Lightweight but extremely strong and thermally stable
Ideal for installations in basements, garages, utility rooms

Applications
Residential gas furnaces
Electric furnaces and air handlers
Furnace retrofits in moisture-prone locations
Code-compliant installations in many U.S. municipalities requiring furnace elevation
Often used when installing a furnace in laundry rooms or near floor drains

Cross-Referenced Models
DiversiTech MBB-2
Packard MB2
JB Industries 2″ motor/furnace mount blocks
Goodman/Amana OEM 2″ riser pads

Comparable Products
DiversiTech EL1838-2 (Elevator riser blocks)
Century MB200 Furnace Mount Blocks
Rheem 2″ furnace pads (OEM)
Camco Anti-Vibration Blocks (with similar dimensions)

Assembly Notes
These blocks do not bolt directly into the furnace but rather serve as a stable base.
For added security, adhesive or hardware may be used to prevent shifting on slick flooring.
Most installations utilize 2–4 blocks under the furnace’s weight-bearing points.

Related
furnace elevation riser
2″ HVAC base block
water-resistant furnace stand
thermoplastic furnace mount
basement furnace moisture protection block

Common Requests
“How many blocks are needed per furnace?” – Typically 2–4, depending on base size and manufacturer.
“Can I cut or drill these blocks?” – Yes, they can be drilled or shaped if needed, though usually not required.
“Do they help with vibration?” – Yes, the thermoplastic absorbs some mechanical vibration.
“Are these required by code?” – In some municipalities, elevation is required where water exposure risk exists.
“Will it support a 300-lb furnace?” – Yes, if distributed evenly across multiple blocks.

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