Retaining Wall Cap Sizes and Specs by Brand
This is a lookup chart of retaining wall cap sizes and specs for 23 cap and coping units from Allan Block, Rochester Concrete Products (which produces Versa-Lok and Classic walls), Keystone, Belgard, Unilock, Techo-Bloc and Nitterhouse Masonry. Every number comes from a manufacturer’s or licensed producer’s spec sheet, linked in the chart, checked Nov. 12, 2026. Where a sheet doesn’t give a number, the cell says “not stated.” We never work out a unit weight from a pallet weight.
For the block under the cap, see the companion chart, retaining wall block sizes, weights and specs, and for pavers, paver sizes, thickness and specs by brand. For overhang and adhesive, see our retaining wall caps guide. This page is just the numbers.
Quick answer
Most wall caps in this chart are 2 to 4 in. thick and 10 to 14 in. deep, and many are 16 to 24 in. long. A common size is about 4 × 18 × 12 in., like Allan Block’s AB Capstone at 55 lb or Rochester’s tapered 4 in. Universal Cap (18 in. front, 14 in. back) at 54 lb. Printed weights for standard wall caps run from 15.2 to 70 lb. Belgard and Techo-Bloc print pallet weights only, so their unit weights say “not stated.”
Wall cap sizes, weights and pallet counts
Sizes are in inches as printed. Where a cap is tapered, the sheet prints two lengths, one per side. Unit weight is shown only where the maker prints it. Unilock calls a pallet a bundle.
| Brand | Cap | Length (in.) | Depth (in.) | Height (in.) | Weight per unit | Per pallet | Straight or tapered | Source |
|---|---|---|---|---|---|---|---|---|
| Allan Block | AB Capstone | 18 | 12 | 4 | 55 lb | not stated | not stated | Allan Block |
| Allan Block, made by Nitterhouse | AB Classic Cap | 12 | 11 3/4 | 4 | 46 lb | 84 | not stated | Nitterhouse |
| Allan Block, made by Nitterhouse | AB Europa Wall Cap | 18 | 11 | 4 | 62 lb | 56 | not stated | Nitterhouse |
| Rochester (Versa-Lok and Classic walls) | 4 in. Universal Cap | 18 front, 14 back | 11 | 4 | 54 lb | 45 (60 lin ft, 2,480 lb) | Tapered | Rochester caps · 2026 guide |
| Rochester | 3 in. Universal and 3 in. Tumbled | 12 front, 10.62 back | 12 | 3 | 26 lb | 48 (45 lin ft, 1,298 lb) | Tapered | Rochester caps · 2026 guide |
| Rochester | Contemporary Cap | 24 | 12 | 2 3/8 | 50 lb | 48 (96 lin ft, 2,450 lb) | Straight (one length printed) | Rochester caps · 2026 guide |
| Rochester | Mini-Cap | 8 front, 6 back | 9.25 | 3 | 15.2 lb | 104 (60 lin ft, 1,630 lb) | Tapered | Rochester caps · 2026 guide |
| Rochester | 4 in. Flat Cap (DOT, Wisconsin) | 18/14 | 11 | 4 | 55 lb | 45 (60 lin ft, 2,520 lb) | Tapered | Rochester caps |
| Rochester | 4 in. Peaked Cap (DOT, Minnesota and Iowa) | 18 | 12 | 4 | 70 lb | 32 (48 lin ft, 2,290 lb) | One length printed; peaked top | Rochester caps |
| Keystone | Country Manor Cap | 12/10 (front and back not labeled) | 11 | 3 | 27 to 30 lb | not stated | Tapered | Keystone spec |
| Keystone | Visage Cap | 8 (listed as width) | 10 | 3 | 19 lb | not stated | not stated | Rochester Keystone catalog |
| Belgard, APG New England | Universal Cap (Diamond 9D sheet) | 17 1/4 / 12 | 10 3/8 | 3 | not stated | 96 (pallet 4,032 lb) | Tapered (two lengths printed) | Belgard APG New England |
| Belgard Mid-Atlantic, Crofton | Universal Cap (Diamond Pro Stone Cut sheet) | 17 and 10 (printed 4 × 17 × 10 × 12) | 12 | 4 | not stated | 48 (34 sq ft, 2,467 lb) | Two lengths printed | Belgard Mid-Atlantic |
| Belgard Mid-Atlantic, Richmond | 4 in. UniCap (Diamond Pro Stone Cut sheet) | 16 | 12 | 4 | not stated | 60 (26.4 sq ft, 3,590 lb) | One length printed | Belgard Mid-Atlantic |
| Belgard Mid-Atlantic | XL Cap (Diamond 10DS, Highland Stone) | 18/12 | 13 | 3 | not stated | 72 (22.32 sq ft); 3,312 or 4,458 lb, see below | Tapered (two lengths printed) | Belgard Mid-Atlantic guide |
| Belgard Mid-Atlantic | Melville Wall Cap (garden and freestanding wall) | 20 | 13 | 2 | not stated | 60 (16.8 sq ft, 2,500 lb) | One length printed | Belgard Mid-Atlantic guide |
| Unilock | Pisa2 24 in. Coping | 24 | 12 | 3 | 145 lb as printed; sheet calls it a double unit | 16 per bundle (64 lin ft, 2,320 lb) | not stated | Unilock coping sheet · Pisa2 sheet |
| Unilock | Universal Coping | 14 × 19 as printed (not labeled) | see length | 2 3/4 | 57 lb | 48 per bundle (75.90 face ft, 2,747 lb) | not stated; chamfered edge | Unilock |
| Techo-Bloc | Double-sided split-face cap, units A, B, C and C* (sheet filed as Architectural Cap) | A: 8 7/8 and 6 1/2. B: 11 13/16 and 9 7/16. C: 14 3/4 and 12 3/8. C*: 14 3/4 and 13 9/16 | 12 1/2 | 2 15/16 | not stated | 24 A, 24 B, 8 C, 16 C* (66 lin ft, 2,390 lb) | Tapered (two lengths per unit) | Techo-Bloc |
| Techo-Bloc | Raffinato Cap, 90 mm | 28 | 14 | 3 9/16 | not stated | 24 (56 lin ft, 2,783 lb) | Double-sided; taper not stated | Techo-Bloc |
| Techo-Bloc | Raffinato Cap, 60 mm | 28 | 14 | 2 3/8 | not stated | 24 (56 lin ft, 1,869 lb) | Double-sided; taper not stated | Techo-Bloc |
| Nitterhouse | Chatham Wallcap, 24 in. | 24 | 12 | 2 1/2 | 58 lb | not stated | Straight; flat with chiseled edges, one finished end | Nitterhouse |
| Nitterhouse | Chatham Wallcap, 48 in. | 48 | 12 | 2 1/2 | 124 lb | not stated | Straight; flat with chiseled edges, one finished end | Nitterhouse |
Where the sheets disagree
We show these as printed instead of picking one number. Examples from these sheets:
- Allan Block caps: Allan Block lists AB Capstone at 4 × 18 × 12 in. and 55 lb. Nitterhouse Masonry, a producer in Chambersburg, PA, lists an AB Classic Cap at 4 × 12 × 11 3/4 in. and 46 lb, and an AB Europa Wall Cap at 4 × 18 × 11 in. and 62 lb.
- Belgard XL Cap: the Mid-Atlantic guide prints the same 72-piece, 22.32 sq ft pallet at 3,312 lb for Diamond 10DS and for Highland Stone from Richmond, and at 4,458 lb for Highland Stone from Crofton.
- Belgard Diamond Pro Stone Cut: on the same sheet, Crofton ships a 4 in. Universal Cap at 48 a pallet, and Richmond ships a 4 × 16 × 12 in. UniCap at 60 a pallet.
- Versa-Lok Standard: Rochester’s Versa-Lok Standard cut sheet says to cap with a 4 in. Universal cap, while its 2026 wall guide lists 3 in. Universal or Chiseled caps. Neither document prints Chiseled cap dimensions.
- Rochester 4 in. caps: the 4 in. Universal Cap and the 4 in. Flat Cap (Wisconsin DOT) print the same 18/14 × 11 × 4 in. size and 45 per pallet, at 54 lb and 2,480 lb a pallet versus 55 lb and 2,520 lb.
- Rochester Mini-Cap: the cap sheet lists 0.67 lin ft per piece but says to estimate by dividing wall length by 0.58.
- Unilock Pisa2 Coping: the coping sheet prints 12 × 24 × 3 in., then lists 145 lb and 4.00 lin ft per unit and calls the unit “Coping 24″ – Double Unit,” so the weight looks like it is for a pair. Confirm with the yard before you plan a lift.
How to read the chart
- Straight vs. tapered. A straight cap prints one length. A tapered cap prints two, such as 18/14. Rochester labels the long side the front; some Belgard and Keystone sheets don’t say which side is which.
- Depth vs. the block. Compare cap depth to the block it sits on in the block specs chart. Our retaining wall caps guide covers overhang and adhesive.
- Weight. We list a unit weight only where the sheet prints one. Pallet weights include the pallet count shown, and we don’t divide them out.
- Per pallet. Linear feet per pallet tells you how much wall top one pallet covers. Belgard prints square feet per pallet instead.
Before you order: get the cut sheet from the yard that will deliver your caps, and count from that sheet. Cap sizes, weights and pallet counts change by plant, and the same name can mean a different cap at a different yard.
Turn the specs into a cap count
Our free retaining wall block calculator counts block, caps, pallets, weight, base and drainage stone from the wall length and height. For an installed price range by material, use the retaining wall cost calculator.
FAQ
What size are retaining wall caps?
There isn’t one standard size. Most caps in this chart are 2 to 4 in. thick and 10 to 14 in. deep, and many are 16 to 24 in. long. A common size is 4 x 18 x 12 in.: Allan Block lists its AB Capstone at 4 in. high, 18 in. long and 12 in. deep, and Rochester’s 4 in. Universal Cap is 18 in. on one side, 14 in. on the other and 11 in. deep.
How much does a retaining wall cap weigh?
Only some sheets print it. In this chart, printed unit weights run from 15.2 lb (Rochester Mini-Cap) to 70 lb (Rochester 4 in. Peaked Cap) for standard wall caps. Allan Block lists AB Capstone at 55 lb, and Rochester lists its 4 in. Universal Cap at 54 lb. Longer pieces weigh more: Nitterhouse lists its 48 in. Chatham Wallcap at 124 lb. Belgard and Techo-Bloc sheets print pallet weights only, and we don’t work out a unit weight from them.
What is the difference between a straight and a tapered wall cap?
A straight cap prints one length. A tapered cap prints two, one for each long side, such as Rochester’s 4 in. Universal Cap at 18 in. and 14 in. or Belgard’s XL Cap at 18/12 in. Rochester’s cap sheet labels the long side as the front; some Belgard and Keystone sheets print the two lengths without saying which is the front.
How many wall caps are on a pallet?
It depends on the cap and the plant. In this chart, pallets run from 16 units (Unilock Pisa2 24 in. Coping, per bundle) to 104 (Rochester Mini-Cap). Rochester’s 4 in. Universal Cap ships 45 to a pallet, covering 60 lin ft, and Belgard’s XL Cap ships 72 to a pallet.
Which cap goes on a Versa-Lok wall?
Rochester Concrete Products, which produces Versa-Lok Standard, gives two answers. Its Versa-Lok Standard cut sheet says to cap with a 4 in. Universal cap, and its 2026 wall reference guide lists 3 in. Universal or Chiseled caps. Ask your yard which one it stocks for your wall.
How many caps do I need for my wall?
Divide the wall’s length by the length one cap covers, and add some for cuts. Rochester’s cap sheet says to divide wall length in feet by 1.33 for its 4 in. Universal Cap. For the Mini-Cap the same sheet says to divide by 0.58, while its table lists the Mini-Cap at 0.67 lin ft per piece, so check the count with your yard.
Sources: Allan Block, AB Collection retaining wall (AB Capstone); Nitterhouse Masonry, AB Classic; Nitterhouse Masonry, AB Europa; Nitterhouse Masonry, Steps and Caps; Rochester Concrete Products, wall caps cut sheet; Rochester Concrete Products, 2026 wall reference guide; Rochester Concrete Products, Versa-Lok Standard cut sheet; Rochester Concrete Products, Keystone catalog (Visage); Keystone Retaining Wall Systems (Contech), specifier (Country Manor Cap); Belgard APG New England, Diamond 9D cut sheet (Universal Cap); Belgard Mid-Atlantic, Diamond Pro Stone Cut cut sheet; Belgard Mid-Atlantic resource guide (XL Cap, Melville Wall Cap); Unilock, Pisa2 Coping cut sheet; Unilock, Pisa 2 cut sheet; Unilock, Universal Coping cut sheet; Techo-Bloc, cap spec sheet (Architectural Cap); Techo-Bloc, Raffinato Cap spec sheet. Checked Nov. 12, 2026.
Related: retaining wall block specs, paver specs and the full retaining wall guide.
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