The Bobrick B-3940 is a recessed combination paper towel dispenser and waste receptacle from Bobrick's ClassicSeries — built for high-traffic commercial restrooms where a clean, fully recessed install is required. The B-3940 dispenses 600 C-fold or 800 multifold towels without an adapter, holds a 6-gallon (22.7-L) removable waste receptacle, and is field-convertible to a touch-free or automatic roll-towel module without replacing the in-wall cabinet. Constructed from 18-8, Type-304 stainless steel with a satin finish, it's a common choice for facilities that need durable, code-friendly washroom hardware. As a Bobrick Premier Partner, Total Restroom offers the B-3940 with a Low Price Guarantee.

Related Products & Accessories

• Convertible Roll Towel Modules:
  • Bobrick 3961-50 Touch-Free Universal Roll Towel Module
  • Bobrick 3974-350 Automatic Universal Roll Towel Module
• Interchangeable Upgraded Waste Bins:
  • Bobrick 367-60 Interchangeable 12-Gallon Waste Receptacle
  • Bobrick 368-60 Interchangeable 18-Gallon Waste Receptacle

Specifications

• Model / MPN: B-3940
• Series: Bobrick ClassicSeries
• Mounting: Recessed
• Overall dimensions: 17-3/16" W × 56" H × 4-3/16" D (437 × 1422 × 105 mm)
• Rough wall opening required: 16" W × 54-3/4" H × 4" minimum recessed depth (406 × 1390 × 100 mm)
• Projection from wall: 4-1/8" (105 mm)
• Towel capacity: 600 C-fold or 800 multifold (no adapter required)
• Waste receptacle capacity: 6 gal (22.7-L), removable
• Material: 18-8, Type-304 stainless steel; cabinet is heavy-gauge with welded construction; flange, door, dispenser, and waste receptacle are 22-gauge (0.8 mm)
• Finish: Satin-finish stainless steel
• Locks: Door and waste receptacle each secured with a tumbler lock, keyed like other Bobrick washroom accessories
• Hinge: Full-length stainless steel piano-hinge on door
• Flange: Drawn and beveled, one-piece, seamless construction
• Shipping weight: 80 lb
• Fasteners: #8 × 1-1/4" (4.2 × 32 mm) sheet-metal screws — not furnished

Key Features

Field-Convertible to Roll Towel Without Replacing the Cabinet
The B-3940 ships as a folded-towel dispenser but is designed to convert in the field to a Universal Touch-Free Roll Towel module (Bobrick Part No. 3961-50) or a Universal Automatic Roll Towel module (Bobrick Part No. 3974-350). The in-wall cabinet stays — only the dispensing module changes. This protects facilities from a future tear-out if usage patterns shift from folded to roll towels.

Type-304 Stainless with Welded Cabinet Construction
The cabinet is 18-8, Type-304 heavy-gauge stainless steel with welded construction. The flange, door, towel dispenser, and waste receptacle are all 22-gauge (0.8 mm) Type-304 stainless. Exposed surfaces have a satin finish suited for commercial restroom use.

Locking Door and Locking Waste Receptacle
The full door is secured to the cabinet with a stainless steel piano-hinge and a semi-concealed tumbler lock. The removable 6-gallon waste receptacle is also secured to the cabinet with its own tumbler lock. Both are keyed like other Bobrick washroom accessories, so a single key works across a facility's Bobrick units.

Seamless Beveled Flange
The flange is drawn and beveled in one-piece, seamless construction, giving the recessed install a clean visual finish at the wall line.

Larger Waste Capacity Available as a Field Upgrade
Facilities that need more than 6 gallons of waste capacity can interchange the receptacle without replacing the unit. Bobrick offers a 12-gal receptacle (Part No. 367-60) and an 18-gal receptacle (Part No. 368-60, with reusable vinyl liner Part No. 368-16).

Installation Guidance

The B-3940 requires a framed rough wall opening of 16" wide × 54-3/4" high (406 × 1390 mm) with a minimum recessed depth of 4" (102 mm) to the finish face of the wall. Coordinate with the mechanical engineer to keep pipes, vents, and conduits clear of the recessed cabinet. Installers shim between framing and cabinet at the points marked "S" on the spec sheet, then secure with #8 × 1-1/4" (4.2 × 32 mm) sheet-metal screws (not included).

For accessible installation, Bobrick identifies the operable part as the top of the paper towel dispenser opening. Maximum operable-part height is 48" AFF (above finished floor) under ADA/ICC and 40" AFF under CBC. To meet those operable-part limits, Bobrick's spec sheet recommends mounting the unit so that the top of the cabinet sits at 67-11/16" (1719 mm) AFF for ADA/ICC, or 59-11/16" (1516 mm) AFF for CBC. Always confirm against your project's governing accessibility code.

Frequently Asked Questions

What size rough wall opening does the Bobrick B-3940 need?
The B-3940 requires a framed rough wall opening of 16" wide × 54-3/4" high (406 × 1390 mm), with a minimum recessed depth of 4" (102 mm) to the finish face of the wall. Bobrick recommends coordinating with the mechanical engineer so pipes, vents, and conduits in the opposite wall don't intrude on the cabinet.

How many paper towels does the B-3940 hold?
The towel module holds up to 600 C-fold or 800 multifold paper towels. The dispenser accepts both fold types without an adapter or any field adjustment.

How big is the waste receptacle on the B-3940?
The standard removable waste receptacle is 6 gallons (22.7 L). It locks into the cabinet with a tumbler lock and is emptied by unlocking with the supplied key.

Can the B-3940 be converted to a roll towel dispenser later?
Yes. The B-3940 is field-convertible without replacing the in-wall cabinet. Install the Universal Touch-Free Roll Towel Module (Bobrick Part No. 3961-50) or the Universal Automatic Roll Towel Module (Bobrick Part No. 3974-350). The folded-towel module is replaced; the cabinet, flange, door, and waste receptacle stay in place.

Can I use a larger waste receptacle with the B-3940 cabinet?
Yes. Bobrick offers a 12-gallon interchangeable receptacle (Part No. 367-60) and an 18-gallon interchangeable receptacle (Part No. 368-60). The 18-gal model has a reusable vinyl liner available as Part No. 368-16. A LinerMate accessory (Part No. 3944-134) is offered for the 12-gal receptacle only.

What material and finish is the B-3940?
The cabinet is 18-8, Type-304 heavy-gauge stainless steel with welded construction. The flange, door, towel dispenser, and waste receptacle are 22-gauge (0.8 mm) Type-304 stainless. All exposed surfaces have a satin finish.

Is the B-3940 lockable?
Yes. The door is secured with a semi-concealed tumbler lock and a full-length stainless steel piano-hinge. The waste receptacle is secured with its own tumbler lock. Both are keyed like other Bobrick washroom accessories, so one key works across a facility's Bobrick units.

Does the B-3940 ship with mounting fasteners?
No. Bobrick's installation instructions specify #8 × 1-1/4" (4.2 × 32 mm) sheet-metal screws, but they are not furnished with the unit and must be supplied by the installer.