Manual Collapsible Wall Containment Berm 4x6'

Product Overview

The Manual Collapsible Wall Containment Berm 4x6' is a portable, collapsible containment berm that folds flat for easy transport and storage. Simply unfold and the berm is ready for service — no tools or assembly required. Ideal for emergency spill response, temporary containment during maintenance, and field operations where permanent berms aren't practical. Chemical-resistant materials handle fuels, oils, solvents, and most industrial liquids. EPA 40 CFR 264.175 compliant.

Technical Specifications

SKU	A8405U
Dimensions (Inside)	4 ft x 6 ft
Wall Height	12 in
Sump Capacity	179 gal
Material	Copolymer 2000
Weight	26 lbs
Color	Black
Wall Type	Manual collapsible (hinged)
Compliance	EPA 40 CFR 264.175, SPCC

Expert Insights

This 4x6' collapsible berm with 179-gallon capacity is sized for smaller equipment, drum storage areas, or tight-space secondary containment needs. The 12-inch manually-collapsible walls fold flat for vehicle and equipment access, then lock upright for containment. Unlike foam walls, these rigid walls provide a full 12 inches of containment height—significantly more sump capacity per square foot. Walls are manually raised and secured with built-in support brackets. Copolymer 2000 liner provides the broadest chemical resistance available: fuels, oils, hydraulic fluids, acids, solvents, and most industrial chemicals. Operating range: -40°F to 160°F for year-round outdoor deployment. EPA 40 CFR 264.175 requires secondary containment at 110% of the largest container. This 179-gallon berm accommodates containers up to 162 gallons. The collapsible wall design allows equipment to be rolled or driven in with walls down, then walls raised for containment during operation. Maintenance: Inspect seams and wall hinges quarterly. Flush with water and mild detergent after spills. Check wall support brackets for secure locking. Patch kits available for Copolymer 2000 field repairs.

Frequently Asked Questions

What is the sump capacity of the 4x6' manual collapsible wall berm?

With 12-inch walls and inside dimensions of 4 ft x 6 ft, this berm holds 179 gallons. Under EPA 40 CFR 264.175 (110% rule), it provides secondary containment for a single container up to 162 gallons.

Can vehicles drive into this berm?

Yes—fold the walls flat, drive or roll equipment in, then manually raise the walls and lock them into position with the built-in support brackets. This is the key advantage over foam wall berms, which cannot support drive-over traffic.

How do the collapsible walls work?

Each wall section hinges at the base and folds completely flat against the liner floor. To deploy, manually lift each wall section to vertical and engage the locking support brackets. One person can set up most sizes in 5-10 minutes.

What chemicals is the Copolymer 2000 liner compatible with?

Copolymer 2000 handles fuels, oils, hydraulic fluids, acids, solvents, and most industrial chemicals. It offers the broadest chemical compatibility of any berm material, with superior UV resistance for long-term outdoor deployment.

What temperature range can this berm handle?

Copolymer 2000 operates from -40°F to 160°F—suitable for Arctic conditions through hot summer deployments. The material remains flexible and functional across this entire range.

How do I repair damage to the liner or walls?

Field repair kits are available for Copolymer 2000. Clean the damaged area, apply the adhesive, and press the patch firmly. For structural damage to wall hinges or support brackets, contact AbsorbentsOnline for warranty evaluation and replacement parts.

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Cross-Reference Guide

This product is compatible with applications that use the following part numbers:

introManual Collapsible Wall Containment Berm 4x6', Copolymer 2000 — compatible part numbers:
partsA8405U
noteAbsorbentsOnline SKU: A8405U. UltraTech manual collapsible wall containment berm, 4 ft x 6 ft x 12 in walls, Copolymer 2000 liner, 179-gallon capacity, 26 lbs. Also referenced as fold-flat wall berm, hinged-wall containment berm, and collapsible secondary containment.