What doesn’t sell is costing you more than you think—here’s how to decide when it’s time to cut the cord.
For glass distributors, managing an expansive catalog of clear, tinted, frosted, laminated, and insulated glass panels—often in multiple thicknesses and custom dimensions—comes with a familiar headache: slow-moving SKUs that quietly drain warehouse resources. These aren’t just harmless leftovers. They represent capital tied up in non-performing assets, space that could serve faster-moving stock, and a silent tax on operational efficiency.
Yet deciding which SKUs to cut is no small feat. Many operations hesitate, fearing they’ll lose niche clients or compromise service levels. The answer isn’t to guess—it’s to apply a rational, data-backed threshold that balances risk with reward.
Step 1: Define “Slow-Moving” by Your Operational Reality
Start by defining what slow-moving means for your business model. Is it fewer than two turns per year? No sales in six months? Less than 1% of category revenue? For a distributor of architectural glass with tight warehouse constraints, that threshold might be more aggressive than for a float glass wholesaler operating on a cross-dock model.
The best thresholds reflect a combination of:
Sales frequency (e.g., <3 orders per year)
Sales volume (e.g., <100 sqft sold per year)
Customer breadth (e.g., fewer than 2 unique buyers in 12 months)
This three-pronged test avoids the trap of cutting high-margin, low-volume items that serve strategic clients while still flagging truly underperforming stock.
Step 2: Segment by Glass Type and Application
Lumping all glass SKUs together in one performance analysis ignores the nuance of product usage. Slow movement in low-E coated glass may be acceptable if it supports specialty curtain wall systems. But if you’re carrying three sizes of ¼” grey float glass that haven’t moved in a year, that’s wasted space.
Segment SKUs into logical groups:
Basic float and laminated
Tempered and heat-treated
Coated (low-E, reflective)
Patterned or decorative
Insulating glass units (IGUs)
Apply your threshold separately to each group, considering demand cycles. Residential window glass might dip seasonally, while commercial glazing panels move steadily year-round.
Step 3: Layer in Inventory Cost and Storage Constraints
Carrying costs in glass aren’t just about shelf life—they include handling risk, racking space, damage rates, and insurance premiums. A 5’x10’ satin-etched panel sitting idle for 18 months ties up far more operational value than a case of 12”x12” mirror tiles.
Tag your SKUs with storage class (A/B/C) and cost-to-hold data. Many distributors find that just 10% of slow-movers consume 50% of warehouse footprint. These are the first candidates for rationalization.
Step 4: Create Action Buckets
Once identified, slow-moving SKUs can be placed into action categories:
Discontinue: No recent sales, no strategic value.
Make-to-order: Move to supplier-direct fulfillment for niche clients.
Promote or bundle: Incentivize sales via contractor bundles or overstock discounts.
Review annually: For borderline SKUs with occasional spikes.
This structure reduces emotional decision-making and gives sales teams a clear path forward when a SKU’s fate is questioned.
:
Setting rationalization thresholds isn’t about purging your catalog—it’s about strengthening it. For glass distributors, applying consistent performance metrics across inventory segments helps uncover what’s really earning shelf space and what’s silently eroding profit. With thresholds in place, SKU decisions become faster, clearer, and more aligned with growth.
