Base your order quantity on forecasted units sold plus a buffer for lead time and unexpected demand, not on a round number that feels safe. Because Frontline Frames' standard lead time is 2–3 weeks from order confirmation, your buffer needs to cover at least that window, plus any cushion for a forecast that runs hotter than expected.
Why plan quantities instead of just reordering when you run low?
Reordering reactively means placing an order after you're already running short, and because production takes real lead time, that gap shows up as vehicles delivering without a frame. Planning against a forecast, even a rough one, gets the order placed before the shortfall happens instead of after.
How do you turn a sales forecast into a plate frame order quantity?
Start with your forecasted units sold over the period you're ordering for, then add a safety margin sized to your lead time. A basic version of this is the standard inventory reorder-point formula: average demand per week, multiplied by lead time in weeks, plus a safety stock buffer for demand that runs above forecast.
What sales data should you actually use for the forecast?
Your own trailing sales history — the last several months of units delivered — is a more reliable starting point than a top-down annual sales goal, since it reflects your actual pace rather than a target you're aiming for. If you're a new rooftop without much history yet, use your first quarter's actuals to build the initial forecast and refine it from there.
Should you order for units sold or units on the lot?
Order primarily against units sold, since that's what actually consumes frames — a delivery install uses one frame per vehicle sold, not per vehicle on the lot. Lot inventory matters mainly if you also frame vehicles before sale for display purposes, which uses frames at a different, usually slower, rate.
How much buffer stock should you keep on hand?
Enough to cover your lead time plus some cushion for a forecast miss. For example, if you install 40 frames a month on average and your lead time is 3 weeks, that's roughly 30 frames of lead-time exposure — a buffer on top of that protects you if a sales month comes in above forecast.
| Input | Example value |
|---|---|
| Average units sold per week | 10 (illustrative example) |
| Lead time | 3 weeks |
| Lead-time demand (10 × 3) | 30 frames |
| Safety stock buffer | Set to your own comfort level, e.g. 15–25% |
| Reorder point | Lead-time demand + safety stock |
These numbers are an illustration of the method, not a claim about typical dealership volume — plug in your own sales data to get a real reorder point.
How do you account for seasonality in your order quantity?
Adjust your average weekly demand figure for the season you're ordering into, rather than using a flat yearly average. If your historical sales data shows a predictable spring or year-end spike, size that order's buffer larger going in, since a lead time that felt comfortable in a slow month can leave you short during a surge.
A subscription set for your slow-season average will consistently underdeliver during your peak months, so revisit the quantity before your busy season starts rather than relying on one fixed recurring number all year.
Should new and used inventory use the same frame stock?
They can, if the design is the same across both — most dealerships use one standard frame design regardless of whether the vehicle is new or used. If you run different designs or text for new versus used (or for a specific used-car satellite lot), forecast and order each pool separately rather than pooling them into one number.
How does a subscription order compare to calculating one-off bulk quantities?
A subscription removes the reorder-point math entirely by shipping a set quantity on a recurring schedule — monthly, bimonthly, quarterly, or semiannual — so frames arrive automatically instead of requiring a new calculation each time. It's a good fit once your sales volume is steady enough to set a reliable recurring quantity.
What happens if you underorder and run out mid-month?
You'll have vehicles delivering without a frame, or frames going on with a delay, until the next order arrives — and because production takes real time, there's no way to fix an underorder same-week. Running out is the clearest sign your buffer needs to grow, not just that this particular month ran hot.
Log every stockout when it happens, even a brief one — a pattern of repeated shortfalls is the clearest signal that your reorder point is set too low for your actual sales pace.
How does buffer stock differ for plastic versus metal frames?
The formula itself doesn't change, but the cost of carrying buffer stock does — metal frames typically cost more per unit than plastic, so a large safety buffer ties up more cash for the same number of units. That's a reason to size your buffer conservatively on higher-cost metal orders and lean more generous on lower-cost plastic runs, rather than using one flat buffer percentage across both.
What happens if you overorder frames?
Excess frames sit as inventory rather than causing any operational problem, since a plate frame doesn't expire — the cost is tied-up cash and storage space, not spoilage. A moderate overorder is a far smaller problem than an underorder, which is why most reorder-point formulas lean toward a safety buffer rather than ordering the bare minimum.
How do you plan quantities across multiple locations from one forecast?
Forecast each location separately using its own historical sales volume, then either place one combined order sized to the total, or let each location reorder independently against its own reorder point. A single combined forecast for a multi-rooftop group only works well if sales volume is genuinely similar across locations.
How far ahead of your forecasted need should you place the order?
Place the order at your calculated reorder point — when remaining stock drops to roughly your lead-time demand plus buffer — rather than waiting until stock is visibly low. Setting a calendar reminder or using a subscription removes the need to watch inventory levels manually.
How do you adjust the plan after a design change?
Treat a design change like starting the reorder-point calculation over: old-design stock stops being usable once the new design is standard, so time the changeover to when old stock is naturally running low rather than scrapping usable inventory. Update your subscription design, if you're on one, so the new design ships automatically going forward.
What's a simple formula to start with?
Reorder point = (average units installed per week × lead time in weeks) + safety stock buffer. Plug in your own sales data, set a buffer you're comfortable with, and reorder whenever your on-hand stock reaches that number.
Revisit the formula's inputs every quarter or two rather than setting it once and forgetting it — a reorder point built on last year's sales pace will run either too tight or too loose once your actual volume shifts.
See live pricing at any quantity in the builder, or set up a recurring order on the how it works page.